Finding the Fourth Proportional to 22,658.72, 31,274.02 and 12,590.62

Step by Step Solution

1. Step 1: Write the proportion equation
   22,658.72 : 31,274.02 = 12,590.62 : x
2. Step 2: Convert to fraction form
   22,658.72/31,274.02 = 12,590.62/x
3. Step 3: Cross multiply
   22,658.72x = 31,274.02 × 12,590.62
4. Step 4: Simplify right side
   22,658.72x = 393,759,301.69
5. Step 5: Solve for x
   x = 393,759,301.69/22,658.72
6. Step 6: Final answer
   x = 17,377.83