Finding the Fourth Proportional to 5,725.10, 8,579.55 and 3,527.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,725.10 : 8,579.55 = 3,527.30 : x
2. Step 2: Convert to fraction form
   5,725.10/8,579.55 = 3,527.30/x
3. Step 3: Cross multiply
   5,725.10x = 8,579.55 × 3,527.30
4. Step 4: Simplify right side
   5,725.10x = 30,262,646.72
5. Step 5: Solve for x
   x = 30,262,646.72/5,725.10
6. Step 6: Final answer
   x = 5,285.96