Finding the Fourth Proportional to 8,587.59, 12,881.15 and 2,744.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,587.59 : 12,881.15 = 2,744.55 : x
2. Step 2: Convert to fraction form
   8,587.59/12,881.15 = 2,744.55/x
3. Step 3: Cross multiply
   8,587.59x = 12,881.15 × 2,744.55
4. Step 4: Simplify right side
   8,587.59x = 35,352,946.51
5. Step 5: Solve for x
   x = 35,352,946.51/8,587.59
6. Step 6: Final answer
   x = 4,116.75