Finding the Fourth Proportional to 8,479.27, 12,714.31 and 2,555.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,479.27 : 12,714.31 = 2,555.34 : x
2. Step 2: Convert to fraction form
   8,479.27/12,714.31 = 2,555.34/x
3. Step 3: Cross multiply
   8,479.27x = 12,714.31 × 2,555.34
4. Step 4: Simplify right side
   8,479.27x = 32,489,384.92
5. Step 5: Solve for x
   x = 32,489,384.92/8,479.27
6. Step 6: Final answer
   x = 3,831.63