Finding the Fourth Proportional to 21,528.62, 29,710.15 and 13,032.29

Step by Step Solution

1. Step 1: Write the proportion equation
   21,528.62 : 29,710.15 = 13,032.29 : x
2. Step 2: Convert to fraction form
   21,528.62/29,710.15 = 13,032.29/x
3. Step 3: Cross multiply
   21,528.62x = 29,710.15 × 13,032.29
4. Step 4: Simplify right side
   21,528.62x = 387,191,290.74
5. Step 5: Solve for x
   x = 387,191,290.74/21,528.62
6. Step 6: Final answer
   x = 17,984.96