Finding the Fourth Proportional to 3,728.91, 5,615.56 and 3,247.77

Step by Step Solution

1. Step 1: Write the proportion equation
   3,728.91 : 5,615.56 = 3,247.77 : x
2. Step 2: Convert to fraction form
   3,728.91/5,615.56 = 3,247.77/x
3. Step 3: Cross multiply
   3,728.91x = 5,615.56 × 3,247.77
4. Step 4: Simplify right side
   3,728.91x = 18,238,002.98
5. Step 5: Solve for x
   x = 18,238,002.98/3,728.91
6. Step 6: Final answer
   x = 4,890.98