Finding the Fourth Proportional to 3,876.53, 5,786.68 and 3,587.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,876.53 : 5,786.68 = 3,587.43 : x
2. Step 2: Convert to fraction form
   3,876.53/5,786.68 = 3,587.43/x
3. Step 3: Cross multiply
   3,876.53x = 5,786.68 × 3,587.43
4. Step 4: Simplify right side
   3,876.53x = 20,759,300.46
5. Step 5: Solve for x
   x = 20,759,300.46/3,876.53
6. Step 6: Final answer
   x = 5,355.12