Finding the Fourth Proportional to 22,892.29, 31,588.04 and 12,821.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,892.29 : 31,588.04 = 12,821.15 : x
2. Step 2: Convert to fraction form
   22,892.29/31,588.04 = 12,821.15/x
3. Step 3: Cross multiply
   22,892.29x = 31,588.04 × 12,821.15
4. Step 4: Simplify right side
   22,892.29x = 404,995,110.07
5. Step 5: Solve for x
   x = 404,995,110.07/22,892.29
6. Step 6: Final answer
   x = 17,691.33