Finding the Fourth Proportional to 22,538.57, 31,105.94 and 13,107.13

Step by Step Solution

1. Step 1: Write the proportion equation
   22,538.57 : 31,105.94 = 13,107.13 : x
2. Step 2: Convert to fraction form
   22,538.57/31,105.94 = 13,107.13/x
3. Step 3: Cross multiply
   22,538.57x = 31,105.94 × 13,107.13
4. Step 4: Simplify right side
   22,538.57x = 407,709,456.05
5. Step 5: Solve for x
   x = 407,709,456.05/22,538.57
6. Step 6: Final answer
   x = 18,089.42