This tournament cost 200 cr per entry and payed 7,000, 6,000 and 5,000 crs to the top three players. Consequently, third place with a 76 score received 5,000 crs. You made fourth with an identical score of 76 - no prize.
It's safe to say that there must have been a scorecard tie breaker as explained in the FAQs which obviously went against you. But, there is no number of winners defined by percentages as in the free tourneys or RGs. Thus, no split of the prize on a tie break.