STRUCK PARKED ACFT WHILE TAXIING.

Narrative

OUR SCHEDULED PART 135 FLT FROM DEN TO TEX WAS UNEVENTFUL. AFTER LNDG IN TEX WE TAXIED TO THE TERMINAL RAMP (WHICH AT THAT TIME WAS QUITE BUSY). WE PROCEEDED AND COMPLETED ALL OF THE CHKLISTS AND BROUGHT TO THE ATTN OF OUR COMPANY GND PERSONNEL THAT WE WERE READY TO TAXI AND PARK. BECAUSE OF THE NARROW PATH THAT WE HAD TO MANEUVER AND TAXI OUR AIRPLANE BTWN ANOTHER AIRPLANE FROM OUR COMPANY THAT HAD PREVIOUSLY LANDED AND WAS PARKED FACING E AT OUR 3 O'CLOCK POS (R WINGTIP) AND A CESSNA 152 PARKED AT OUR 9 O'CLOCK POS (L WINGTIP) I REQUESTED FROM OUR STATION PERSONNEL 1 PERSON TO WATCH OUR R WINGTIP AND ANOTHER TO WATCH OUR L WINGTIP WHILE A THIRD MARSHALL DIRECTLY IN FRONT OF US WAS GUIDING US INTO THE RAMP. I WAS TAXIING THE ACFT VERY SLOWLY AND GREAT CAUTION AND FROM THE COCKPIT EVERYTHING APPEARED TO BE ALRIGHT BUT RIGHT WHEN THE R WINGTIP FROM OUR ACFT WAS PASSING BEHIND OUR COMPANY AIRPLANE PARKED AT OUR 3 O'CLOCK POS; IT STRUCK ITS FRAGILE TAIL CONE (PLASTIC) LOCATED UNDER THE RUDDER AND ABOVE THE VENTRAL FIN. THE MARSHALLERS THEN REACTED AND DIRECTED ME TO STOP BUT THE DAMAGE WAS ALREADY DONE. AS A RESULT OF THE IMPACT; A 3 INCH BY 4 INCH HOLE WAS MADE IN THE COMPANY ACFT TAIL CONE. AFTER THE INCIDENT WE CHKED OUR ACFT R WINGTIP THAT REVEALED NO DAMAGE AT ALL FROM THE IMPACT. LESSON LEARNED: DO NOT RELY SO MUCH ON GND PERSONNEL AND GIVE YOURSELF PLENTY OF ROOM. THE GND PERSONNEL LEARNED THE LESSON; TOO.