Finding the Fourth Proportional to 22,665.62, 31,278.15 and 12,593.68

Step by Step Solution

1. Step 1: Write the proportion equation
   22,665.62 : 31,278.15 = 12,593.68 : x
2. Step 2: Convert to fraction form
   22,665.62/31,278.15 = 12,593.68/x
3. Step 3: Cross multiply
   22,665.62x = 31,278.15 × 12,593.68
4. Step 4: Simplify right side
   22,665.62x = 393,906,933.90
5. Step 5: Solve for x
   x = 393,906,933.90/22,665.62
6. Step 6: Final answer
   x = 17,379.05