Finding the Fourth Proportional to 12,586.31, 17,367.69 and 7,550.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,586.31 : 17,367.69 = 7,550.73 : x
2. Step 2: Convert to fraction form
   12,586.31/17,367.69 = 7,550.73/x
3. Step 3: Cross multiply
   12,586.31x = 17,367.69 × 7,550.73
4. Step 4: Simplify right side
   12,586.31x = 131,138,737.91
5. Step 5: Solve for x
   x = 131,138,737.91/12,586.31
6. Step 6: Final answer
   x = 10,419.16