Finding the Fourth Proportional to 22,665.10, 31,245.35 and 15,929.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,665.10 : 31,245.35 = 15,929.82 : x
2. Step 2: Convert to fraction form
   22,665.10/31,245.35 = 15,929.82/x
3. Step 3: Cross multiply
   22,665.10x = 31,245.35 × 15,929.82
4. Step 4: Simplify right side
   22,665.10x = 497,732,721.69
5. Step 5: Solve for x
   x = 497,732,721.69/22,665.10
6. Step 6: Final answer
   x = 21,960.32