Finding the Fourth Proportional to 3,957.57, 5,932.80 and 3,615.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,957.57 : 5,932.80 = 3,615.12 : x
2. Step 2: Convert to fraction form
   3,957.57/5,932.80 = 3,615.12/x
3. Step 3: Cross multiply
   3,957.57x = 5,932.80 × 3,615.12
4. Step 4: Simplify right side
   3,957.57x = 21,447,783.94
5. Step 5: Solve for x
   x = 21,447,783.94/3,957.57
6. Step 6: Final answer
   x = 5,419.43