Select A/P aging summary report:
Go to filter
In Add Fields; Select Open payables
select Account line first one and then select the A/P account you are trying to compare with Trial Balance.
Click on show in Filter region

Once these fields are done save the report.
NOTE :
Setting up of preference is mandatory to get correct amount compared to Trial or general ledger balance.
Go To , Set Preferences

Select Anlytics tab, Select All reports in the Report by period field and save.