Finding the Fourth Proportional to 3,672.85, 5,064.81 and 3,143.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,672.85 : 5,064.81 = 3,143.49 : x
2. Step 2: Convert to fraction form
   3,672.85/5,064.81 = 3,143.49/x
3. Step 3: Cross multiply
   3,672.85x = 5,064.81 × 3,143.49
4. Step 4: Simplify right side
   3,672.85x = 15,921,179.59
5. Step 5: Solve for x
   x = 15,921,179.59/3,672.85
6. Step 6: Final answer
   x = 4,334.83