Finding the Fourth Proportional to 21,531.38, 32,296.72 and 10,439.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,531.38 : 32,296.72 = 10,439.02 : x
2. Step 2: Convert to fraction form
   21,531.38/32,296.72 = 10,439.02/x
3. Step 3: Cross multiply
   21,531.38x = 32,296.72 × 10,439.02
4. Step 4: Simplify right side
   21,531.38x = 337,146,106.01
5. Step 5: Solve for x
   x = 337,146,106.01/21,531.38
6. Step 6: Final answer
   x = 15,658.36