Finding the Fourth Proportional to 12,407.27, 17,124.47 and 7,105.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,407.27 : 17,124.47 = 7,105.61 : x
2. Step 2: Convert to fraction form
   12,407.27/17,124.47 = 7,105.61/x
3. Step 3: Cross multiply
   12,407.27x = 17,124.47 × 7,105.61
4. Step 4: Simplify right side
   12,407.27x = 121,679,684.13
5. Step 5: Solve for x
   x = 121,679,684.13/12,407.27
6. Step 6: Final answer
   x = 9,807.13