Finding the Fourth Proportional to 8,899.96, 12,280.98 and 5,756.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,899.96 : 12,280.98 = 5,756.15 : x
2. Step 2: Convert to fraction form
   8,899.96/12,280.98 = 5,756.15/x
3. Step 3: Cross multiply
   8,899.96x = 12,280.98 × 5,756.15
4. Step 4: Simplify right side
   8,899.96x = 70,691,163.03
5. Step 5: Solve for x
   x = 70,691,163.03/8,899.96
6. Step 6: Final answer
   x = 7,942.86