Finding the Fourth Proportional to 3,728.16, 5,141.88 and 3,308.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,728.16 : 5,141.88 = 3,308.80 : x
2. Step 2: Convert to fraction form
   3,728.16/5,141.88 = 3,308.80/x
3. Step 3: Cross multiply
   3,728.16x = 5,141.88 × 3,308.80
4. Step 4: Simplify right side
   3,728.16x = 17,013,452.54
5. Step 5: Solve for x
   x = 17,013,452.54/3,728.16
6. Step 6: Final answer
   x = 4,563.50