Finding the Fourth Proportional to 8,109.28, 12,164.50 and 2,843.68

Step by Step Solution

1. Step 1: Write the proportion equation
   8,109.28 : 12,164.50 = 2,843.68 : x
2. Step 2: Convert to fraction form
   8,109.28/12,164.50 = 2,843.68/x
3. Step 3: Cross multiply
   8,109.28x = 12,164.50 × 2,843.68
4. Step 4: Simplify right side
   8,109.28x = 34,591,945.36
5. Step 5: Solve for x
   x = 34,591,945.36/8,109.28
6. Step 6: Final answer
   x = 4,265.72