Finding the Fourth Proportional to 10,961.56, 16,437 and 5,413.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,961.56 : 16,437 = 5,413.08 : x
2. Step 2: Convert to fraction form
   10,961.56/16,437 = 5,413.08/x
3. Step 3: Cross multiply
   10,961.56x = 16,437 × 5,413.08
4. Step 4: Simplify right side
   10,961.56x = 88,974,795.96
5. Step 5: Solve for x
   x = 88,974,795.96/10,961.56
6. Step 6: Final answer
   x = 8,116.98