Finding the Fourth Proportional to 3,916.15, 5,404.52 and 2,587.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,916.15 : 5,404.52 = 2,587.55 : x
2. Step 2: Convert to fraction form
   3,916.15/5,404.52 = 2,587.55/x
3. Step 3: Cross multiply
   3,916.15x = 5,404.52 × 2,587.55
4. Step 4: Simplify right side
   3,916.15x = 13,984,445.17
5. Step 5: Solve for x
   x = 13,984,445.17/3,916.15
6. Step 6: Final answer
   x = 3,570.97