Finding the Fourth Proportional to 8,270.89, 12,407.15 and 2,724.28

Step by Step Solution

1. Step 1: Write the proportion equation
   8,270.89 : 12,407.15 = 2,724.28 : x
2. Step 2: Convert to fraction form
   8,270.89/12,407.15 = 2,724.28/x
3. Step 3: Cross multiply
   8,270.89x = 12,407.15 × 2,724.28
4. Step 4: Simplify right side
   8,270.89x = 33,800,550.60
5. Step 5: Solve for x
   x = 33,800,550.60/8,270.89
6. Step 6: Final answer
   x = 4,086.69