What are the significant figures of this answer 14682120.8? would i round this number and then find the significant figures?

1468212 and 8 are the sig figs.

I would say there are NINE significant figures (since there is a .8 after the '0')

From the web:

There are three rules on determining how many significant figures are in a number:

Non-zero digits are always significant.

Any zeros between two significant digits are significant.

A final zero or trailing zeros in the decimal portion ONLY are significant.