Finding the Fourth Proportional to 8,286.06, 12,429.90 and 2,738.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,286.06 : 12,429.90 = 2,738.10 : x
2. Step 2: Convert to fraction form
   8,286.06/12,429.90 = 2,738.10/x
3. Step 3: Cross multiply
   8,286.06x = 12,429.90 × 2,738.10
4. Step 4: Simplify right side
   8,286.06x = 34,034,309.19
5. Step 5: Solve for x
   x = 34,034,309.19/8,286.06
6. Step 6: Final answer
   x = 4,107.42