Finding the Fourth Proportional to 8,713.60, 12,025.96 and 5,528.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,713.60 : 12,025.96 = 5,528.50 : x
2. Step 2: Convert to fraction form
   8,713.60/12,025.96 = 5,528.50/x
3. Step 3: Cross multiply
   8,713.60x = 12,025.96 × 5,528.50
4. Step 4: Simplify right side
   8,713.60x = 66,485,519.86
5. Step 5: Solve for x
   x = 66,485,519.86/8,713.60
6. Step 6: Final answer
   x = 7,630.09