Answer:
The empirical formula of Caproic acid is

Step-by-step explanation:
Empirical formula : It is the simplest whole number ratio of atoms present in the compound.
For e.g the empirical formula for glucose
is

Actual Caproic acid is Hexanoic acid

Formula Used :

How to solve the problem:(See the attached Image)
- Calculate the number of moles of C,H and O
- Calculate the ratio by dividing with the smallest number (0.00258 mole)
- Convert the ratio into simple whole number
- Attach the number to the respective elements