Finding the Fourth Proportional to 22,942.29, 31,658.49 and 12,869.37

Step by Step Solution

1. Step 1: Write the proportion equation
   22,942.29 : 31,658.49 = 12,869.37 : x
2. Step 2: Convert to fraction form
   22,942.29/31,658.49 = 12,869.37/x
3. Step 3: Cross multiply
   22,942.29x = 31,658.49 × 12,869.37
4. Step 4: Simplify right side
   22,942.29x = 407,424,821.45
5. Step 5: Solve for x
   x = 407,424,821.45/22,942.29
6. Step 6: Final answer
   x = 17,758.68