Finding the Fourth Proportional to 3,209.04, 4,399.59 and 3,150.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,209.04 : 4,399.59 = 3,150.72 : x
2. Step 2: Convert to fraction form
   3,209.04/4,399.59 = 3,150.72/x
3. Step 3: Cross multiply
   3,209.04x = 4,399.59 × 3,150.72
4. Step 4: Simplify right side
   3,209.04x = 13,861,876.20
5. Step 5: Solve for x
   x = 13,861,876.20/3,209.04
6. Step 6: Final answer
   x = 4,319.63