Finding the Fourth Proportional to 3,906.48, 5,392.79 and 2,415.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,906.48 : 5,392.79 = 2,415.27 : x
2. Step 2: Convert to fraction form
   3,906.48/5,392.79 = 2,415.27/x
3. Step 3: Cross multiply
   3,906.48x = 5,392.79 × 2,415.27
4. Step 4: Simplify right side
   3,906.48x = 13,025,043.90
5. Step 5: Solve for x
   x = 13,025,043.90/3,906.48
6. Step 6: Final answer
   x = 3,334.21