Finding the Fourth Proportional to 5,712.30, 8,562.53 and 3,522.57

Step by Step Solution

1. Step 1: Write the proportion equation
   5,712.30 : 8,562.53 = 3,522.57 : x
2. Step 2: Convert to fraction form
   5,712.30/8,562.53 = 3,522.57/x
3. Step 3: Cross multiply
   5,712.30x = 8,562.53 × 3,522.57
4. Step 4: Simplify right side
   5,712.30x = 30,162,093.69
5. Step 5: Solve for x
   x = 30,162,093.69/5,712.30
6. Step 6: Final answer
   x = 5,280.20