Finding the Fourth Proportional to 8,581.55, 12,872.55 and 2,738.16

Step by Step Solution

1. Step 1: Write the proportion equation
   8,581.55 : 12,872.55 = 2,738.16 : x
2. Step 2: Convert to fraction form
   8,581.55/12,872.55 = 2,738.16/x
3. Step 3: Cross multiply
   8,581.55x = 12,872.55 × 2,738.16
4. Step 4: Simplify right side
   8,581.55x = 35,247,101.51
5. Step 5: Solve for x
   x = 35,247,101.51/8,581.55
6. Step 6: Final answer
   x = 4,107.31