Finding the Fourth Proportional to 8,523.52, 12,780.16 and 3,522.04

Step by Step Solution

1. Step 1: Write the proportion equation
   8,523.52 : 12,780.16 = 3,522.04 : x
2. Step 2: Convert to fraction form
   8,523.52/12,780.16 = 3,522.04/x
3. Step 3: Cross multiply
   8,523.52x = 12,780.16 × 3,522.04
4. Step 4: Simplify right side
   8,523.52x = 45,012,234.73
5. Step 5: Solve for x
   x = 45,012,234.73/8,523.52
6. Step 6: Final answer
   x = 5,280.94