Finding the Fourth Proportional to 5,500.40, 7,591.08 and 3,142.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,500.40 : 7,591.08 = 3,142.72 : x
2. Step 2: Convert to fraction form
   5,500.40/7,591.08 = 3,142.72/x
3. Step 3: Cross multiply
   5,500.40x = 7,591.08 × 3,142.72
4. Step 4: Simplify right side
   5,500.40x = 23,856,638.94
5. Step 5: Solve for x
   x = 23,856,638.94/5,500.40
6. Step 6: Final answer
   x = 4,337.26