Finding the Fourth Proportional to 3,686.27, 5,086.98 and 2,007.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,686.27 : 5,086.98 = 2,007.69 : x
2. Step 2: Convert to fraction form
   3,686.27/5,086.98 = 2,007.69/x
3. Step 3: Cross multiply
   3,686.27x = 5,086.98 × 2,007.69
4. Step 4: Simplify right side
   3,686.27x = 10,213,078.88
5. Step 5: Solve for x
   x = 10,213,078.88/3,686.27
6. Step 6: Final answer
   x = 2,770.57