Finding the Fourth Proportional to 3,931.50, 5,423.04 and 2,604.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,931.50 : 5,423.04 = 2,604.72 : x
2. Step 2: Convert to fraction form
   3,931.50/5,423.04 = 2,604.72/x
3. Step 3: Cross multiply
   3,931.50x = 5,423.04 × 2,604.72
4. Step 4: Simplify right side
   3,931.50x = 14,125,500.75
5. Step 5: Solve for x
   x = 14,125,500.75/3,931.50
6. Step 6: Final answer
   x = 3,592.90