Finding the Fourth Proportional to 8,311.27, 12,467.09 and 3,114.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,311.27 : 12,467.09 = 3,114.31 : x
2. Step 2: Convert to fraction form
   8,311.27/12,467.09 = 3,114.31/x
3. Step 3: Cross multiply
   8,311.27x = 12,467.09 × 3,114.31
4. Step 4: Simplify right side
   8,311.27x = 38,826,383.06
5. Step 5: Solve for x
   x = 38,826,383.06/8,311.27
6. Step 6: Final answer
   x = 4,671.53