Finding the Fourth Proportional to 21,451.10, 32,171.49 and 7,411.61

Step by Step Solution

1. Step 1: Write the proportion equation
   21,451.10 : 32,171.49 = 7,411.61 : x
2. Step 2: Convert to fraction form
   21,451.10/32,171.49 = 7,411.61/x
3. Step 3: Cross multiply
   21,451.10x = 32,171.49 × 7,411.61
4. Step 4: Simplify right side
   21,451.10x = 238,442,617.43
5. Step 5: Solve for x
   x = 238,442,617.43/21,451.10
6. Step 6: Final answer
   x = 11,115.64