Finding the Fourth Proportional to 3,960.27, 5,966.78 and 3,585.24

Step by Step Solution

1. Step 1: Write the proportion equation
   3,960.27 : 5,966.78 = 3,585.24 : x
2. Step 2: Convert to fraction form
   3,960.27/5,966.78 = 3,585.24/x
3. Step 3: Cross multiply
   3,960.27x = 5,966.78 × 3,585.24
4. Step 4: Simplify right side
   3,960.27x = 21,392,320.40
5. Step 5: Solve for x
   x = 21,392,320.40/3,960.27
6. Step 6: Final answer
   x = 5,401.73