Finding the Fourth Proportional to 8,079.39, 12,109.01 and 2,879.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,079.39 : 12,109.01 = 2,879.55 : x
2. Step 2: Convert to fraction form
   8,079.39/12,109.01 = 2,879.55/x
3. Step 3: Cross multiply
   8,079.39x = 12,109.01 × 2,879.55
4. Step 4: Simplify right side
   8,079.39x = 34,868,485.35
5. Step 5: Solve for x
   x = 34,868,485.35/8,079.39
6. Step 6: Final answer
   x = 4,315.73