Finding the Fourth Proportional to 12,502.80, 18,754.17 and 5,105.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,502.80 : 18,754.17 = 5,105.61 : x
2. Step 2: Convert to fraction form
   12,502.80/18,754.17 = 5,105.61/x
3. Step 3: Cross multiply
   12,502.80x = 18,754.17 × 5,105.61
4. Step 4: Simplify right side
   12,502.80x = 95,751,477.89
5. Step 5: Solve for x
   x = 95,751,477.89/12,502.80
6. Step 6: Final answer
   x = 7,658.40