Finding the Fourth Proportional to 8,280.32, 12,421.71 and 2,734.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,280.32 : 12,421.71 = 2,734.25 : x
2. Step 2: Convert to fraction form
   8,280.32/12,421.71 = 2,734.25/x
3. Step 3: Cross multiply
   8,280.32x = 12,421.71 × 2,734.25
4. Step 4: Simplify right side
   8,280.32x = 33,964,060.57
5. Step 5: Solve for x
   x = 33,964,060.57/8,280.32
6. Step 6: Final answer
   x = 4,101.78