Finding the Fourth Proportional to 8,228.58, 12,340.20 and 2,680.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,228.58 : 12,340.20 = 2,680.47 : x
2. Step 2: Convert to fraction form
   8,228.58/12,340.20 = 2,680.47/x
3. Step 3: Cross multiply
   8,228.58x = 12,340.20 × 2,680.47
4. Step 4: Simplify right side
   8,228.58x = 33,077,535.89
5. Step 5: Solve for x
   x = 33,077,535.89/8,228.58
6. Step 6: Final answer
   x = 4,019.84