Finding the Fourth Proportional to 21,429.43, 32,149.24 and 8,942.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,429.43 : 32,149.24 = 8,942.52 : x
2. Step 2: Convert to fraction form
   21,429.43/32,149.24 = 8,942.52/x
3. Step 3: Cross multiply
   21,429.43x = 32,149.24 × 8,942.52
4. Step 4: Simplify right side
   21,429.43x = 287,495,060.94
5. Step 5: Solve for x
   x = 287,495,060.94/21,429.43
6. Step 6: Final answer
   x = 13,415.90