Answer:
Explanation:
The compound interest formula is 

- P: the initial amount of cash
 - r: interest rate
 - n: # of times that interest is compounded per time period
 - t: # of time periods
 
Known information:
- P: 18733
 - r: 5.1% or 0.051
 - n: quarterly or 4
 - t: 10 yrs
 
Now let's set up the equation:
 Future amount: 
 

Thus the future amount is $31.095.49.
Hope that helps!