Hi,
System is calculating correctly, but we need to analyze properly okay.
No of days is 16 and No of days in a month is 30.
split month factor = No of days/ No of days in a month.
This split month factor will get multiply with 6500(PF basis).
In your case = 6500 * 16/30 = 34666.666 ~=3467(/3FA).
PF amount is calculating on this basis.
Regards,
Vijay Kumar