Finding the Fourth Proportional to 22,727.92, 31,364.56 and 12,658.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,727.92 : 31,364.56 = 12,658.30 : x
2. Step 2: Convert to fraction form
   22,727.92/31,364.56 = 12,658.30/x
3. Step 3: Cross multiply
   22,727.92x = 31,364.56 × 12,658.30
4. Step 4: Simplify right side
   22,727.92x = 397,022,009.85
5. Step 5: Solve for x
   x = 397,022,009.85/22,727.92
6. Step 6: Final answer
   x = 17,468.47