Finding the Fourth Proportional to 8,333.48, 12,485.85 and 5,520.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,333.48 : 12,485.85 = 5,520.56 : x
2. Step 2: Convert to fraction form
   8,333.48/12,485.85 = 5,520.56/x
3. Step 3: Cross multiply
   8,333.48x = 12,485.85 × 5,520.56
4. Step 4: Simplify right side
   8,333.48x = 68,928,821.65
5. Step 5: Solve for x
   x = 68,928,821.65/8,333.48
6. Step 6: Final answer
   x = 8,271.32