Finding the Fourth Proportional to 22,665.42, 31,277.61 and 12,593.61

Step by Step Solution

1. Step 1: Write the proportion equation
   22,665.42 : 31,277.61 = 12,593.61 : x
2. Step 2: Convert to fraction form
   22,665.42/31,277.61 = 12,593.61/x
3. Step 3: Cross multiply
   22,665.42x = 31,277.61 × 12,593.61
4. Step 4: Simplify right side
   22,665.42x = 393,898,022.07
5. Step 5: Solve for x
   x = 393,898,022.07/22,665.42
6. Step 6: Final answer
   x = 17,378.81