Finding the Fourth Proportional to 8,854.20, 13,276.72 and 2,613.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,854.20 : 13,276.72 = 2,613.42 : x
2. Step 2: Convert to fraction form
   8,854.20/13,276.72 = 2,613.42/x
3. Step 3: Cross multiply
   8,854.20x = 13,276.72 × 2,613.42
4. Step 4: Simplify right side
   8,854.20x = 34,697,645.58
5. Step 5: Solve for x
   x = 34,697,645.58/8,854.20
6. Step 6: Final answer
   x = 3,918.78