Finding the Fourth Proportional to 3,909.72, 5,395.54 and 2,417.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,909.72 : 5,395.54 = 2,417.16 : x
2. Step 2: Convert to fraction form
   3,909.72/5,395.54 = 2,417.16/x
3. Step 3: Cross multiply
   3,909.72x = 5,395.54 × 2,417.16
4. Step 4: Simplify right side
   3,909.72x = 13,041,883.47
5. Step 5: Solve for x
   x = 13,041,883.47/3,909.72
6. Step 6: Final answer
   x = 3,335.76