Finding the Fourth Proportional to 21,123.38, 29,116.46 and 14,315.33

Step by Step Solution

1. Step 1: Write the proportion equation
   21,123.38 : 29,116.46 = 14,315.33 : x
2. Step 2: Convert to fraction form
   21,123.38/29,116.46 = 14,315.33/x
3. Step 3: Cross multiply
   21,123.38x = 29,116.46 × 14,315.33
4. Step 4: Simplify right side
   21,123.38x = 416,811,841.91
5. Step 5: Solve for x
   x = 416,811,841.91/21,123.38
6. Step 6: Final answer
   x = 19,732.25