Finding the Fourth Proportional to 22,429.62, 30,951.87 and 12,862.65

Step by Step Solution

1. Step 1: Write the proportion equation
   22,429.62 : 30,951.87 = 12,862.65 : x
2. Step 2: Convert to fraction form
   22,429.62/30,951.87 = 12,862.65/x
3. Step 3: Cross multiply
   22,429.62x = 30,951.87 × 12,862.65
4. Step 4: Simplify right side
   22,429.62x = 398,123,070.66
5. Step 5: Solve for x
   x = 398,123,070.66/22,429.62
6. Step 6: Final answer
   x = 17,749.88