Finding the Fourth Proportional to 3,768.86, 5,198.41 and 2,587.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,768.86 : 5,198.41 = 2,587.88 : x
2. Step 2: Convert to fraction form
   3,768.86/5,198.41 = 2,587.88/x
3. Step 3: Cross multiply
   3,768.86x = 5,198.41 × 2,587.88
4. Step 4: Simplify right side
   3,768.86x = 13,452,861.27
5. Step 5: Solve for x
   x = 13,452,861.27/3,768.86
6. Step 6: Final answer
   x = 3,569.48