Finding the Fourth Proportional to 21,934.50, 32,905.17 and 7,139.93

Step by Step Solution

1. Step 1: Write the proportion equation
   21,934.50 : 32,905.17 = 7,139.93 : x
2. Step 2: Convert to fraction form
   21,934.50/32,905.17 = 7,139.93/x
3. Step 3: Cross multiply
   21,934.50x = 32,905.17 × 7,139.93
4. Step 4: Simplify right side
   21,934.50x = 234,940,445.91
5. Step 5: Solve for x
   x = 234,940,445.91/21,934.50
6. Step 6: Final answer
   x = 10,711.00