Finding the Fourth Proportional to 21,265.74, 31,892.13 and 7,411.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,265.74 : 31,892.13 = 7,411.50 : x
2. Step 2: Convert to fraction form
   21,265.74/31,892.13 = 7,411.50/x
3. Step 3: Cross multiply
   21,265.74x = 31,892.13 × 7,411.50
4. Step 4: Simplify right side
   21,265.74x = 236,368,521.50
5. Step 5: Solve for x
   x = 236,368,521.50/21,265.74
6. Step 6: Final answer
   x = 11,114.99