Finding the Fourth Proportional to 8,482.72, 12,710.04 and 3,285.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,482.72 : 12,710.04 = 3,285.76 : x
2. Step 2: Convert to fraction form
   8,482.72/12,710.04 = 3,285.76/x
3. Step 3: Cross multiply
   8,482.72x = 12,710.04 × 3,285.76
4. Step 4: Simplify right side
   8,482.72x = 41,762,141.03
5. Step 5: Solve for x
   x = 41,762,141.03/8,482.72
6. Step 6: Final answer
   x = 4,923.20