Finding the Fourth Proportional to 12,581.42, 17,363.16 and 7,545.85

Step by Step Solution

1. Step 1: Write the proportion equation
   12,581.42 : 17,363.16 = 7,545.85 : x
2. Step 2: Convert to fraction form
   12,581.42/17,363.16 = 7,545.85/x
3. Step 3: Cross multiply
   12,581.42x = 17,363.16 × 7,545.85
4. Step 4: Simplify right side
   12,581.42x = 131,019,757.48
5. Step 5: Solve for x
   x = 131,019,757.48/12,581.42
6. Step 6: Final answer
   x = 10,413.75