Finding the Fourth Proportional to 22,717.37, 31,350.89 and 12,645.17

Step by Step Solution

1. Step 1: Write the proportion equation
   22,717.37 : 31,350.89 = 12,645.17 : x
2. Step 2: Convert to fraction form
   22,717.37/31,350.89 = 12,645.17/x
3. Step 3: Cross multiply
   22,717.37x = 31,350.89 × 12,645.17
4. Step 4: Simplify right side
   22,717.37x = 396,437,443.69
5. Step 5: Solve for x
   x = 396,437,443.69/22,717.37
6. Step 6: Final answer
   x = 17,450.85