Finding the Fourth Proportional to 21,371.34, 32,057.47 and 7,331.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,371.34 : 32,057.47 = 7,331.31 : x
2. Step 2: Convert to fraction form
   21,371.34/32,057.47 = 7,331.31/x
3. Step 3: Cross multiply
   21,371.34x = 32,057.47 × 7,331.31
4. Step 4: Simplify right side
   21,371.34x = 235,023,259.55
5. Step 5: Solve for x
   x = 235,023,259.55/21,371.34
6. Step 6: Final answer
   x = 10,997.12