Finding the Fourth Proportional to 21,731.04, 32,401.92 and 21,337.38

Step by Step Solution

1. Step 1: Write the proportion equation
   21,731.04 : 32,401.92 = 21,337.38 : x
2. Step 2: Convert to fraction form
   21,731.04/32,401.92 = 21,337.38/x
3. Step 3: Cross multiply
   21,731.04x = 32,401.92 × 21,337.38
4. Step 4: Simplify right side
   21,731.04x = 691,372,079.77
5. Step 5: Solve for x
   x = 691,372,079.77/21,731.04
6. Step 6: Final answer
   x = 31,814.96