Finding the Fourth Proportional to 11,895.68, 16,413.78 and 7,647.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,895.68 : 16,413.78 = 7,647.50 : x
2. Step 2: Convert to fraction form
   11,895.68/16,413.78 = 7,647.50/x
3. Step 3: Cross multiply
   11,895.68x = 16,413.78 × 7,647.50
4. Step 4: Simplify right side
   11,895.68x = 125,524,382.55
5. Step 5: Solve for x
   x = 125,524,382.55/11,895.68
6. Step 6: Final answer
   x = 10,552.10