Finding the Fourth Proportional to 8,256.62, 12,385.34 and 2,707.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,256.62 : 12,385.34 = 2,707.72 : x
2. Step 2: Convert to fraction form
   8,256.62/12,385.34 = 2,707.72/x
3. Step 3: Cross multiply
   8,256.62x = 12,385.34 × 2,707.72
4. Step 4: Simplify right side
   8,256.62x = 33,536,032.82
5. Step 5: Solve for x
   x = 33,536,032.82/8,256.62
6. Step 6: Final answer
   x = 4,061.71