Finding the Fourth Proportional to 3,433.57, 5,121.50 and 3,118.24

Step by Step Solution

1. Step 1: Write the proportion equation
   3,433.57 : 5,121.50 = 3,118.24 : x
2. Step 2: Convert to fraction form
   3,433.57/5,121.50 = 3,118.24/x
3. Step 3: Cross multiply
   3,433.57x = 5,121.50 × 3,118.24
4. Step 4: Simplify right side
   3,433.57x = 15,970,073.80
5. Step 5: Solve for x
   x = 15,970,073.80/3,433.57
6. Step 6: Final answer
   x = 4,651.15