Finding the Fourth Proportional to 22,665.78, 31,278.24 and 12,593.74

Step by Step Solution

1. Step 1: Write the proportion equation
   22,665.78 : 31,278.24 = 12,593.74 : x
2. Step 2: Convert to fraction form
   22,665.78/31,278.24 = 12,593.74/x
3. Step 3: Cross multiply
   22,665.78x = 31,278.24 × 12,593.74
4. Step 4: Simplify right side
   22,665.78x = 393,910,022.22
5. Step 5: Solve for x
   x = 393,910,022.22/22,665.78
6. Step 6: Final answer
   x = 17,379.06