Finding the Fourth Proportional to 8,280.80, 12,416.50 and 5,651.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,280.80 : 12,416.50 = 5,651.50 : x
2. Step 2: Convert to fraction form
   8,280.80/12,416.50 = 5,651.50/x
3. Step 3: Cross multiply
   8,280.80x = 12,416.50 × 5,651.50
4. Step 4: Simplify right side
   8,280.80x = 70,171,801.80
5. Step 5: Solve for x
   x = 70,171,801.80/8,280.80
6. Step 6: Final answer
   x = 8,474.03