Finding the Fourth Proportional to 21,372.14, 29,488.50 and 12,414.32

Step by Step Solution

1. Step 1: Write the proportion equation
   21,372.14 : 29,488.50 = 12,414.32 : x
2. Step 2: Convert to fraction form
   21,372.14/29,488.50 = 12,414.32/x
3. Step 3: Cross multiply
   21,372.14x = 29,488.50 × 12,414.32
4. Step 4: Simplify right side
   21,372.14x = 366,079,675.32
5. Step 5: Solve for x
   x = 366,079,675.32/21,372.14
6. Step 6: Final answer
   x = 17,128.83