Finding the Fourth Proportional to 3,986.70, 5,499.27 and 3,101.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,986.70 : 5,499.27 = 3,101.10 : x
2. Step 2: Convert to fraction form
   3,986.70/5,499.27 = 3,101.10/x
3. Step 3: Cross multiply
   3,986.70x = 5,499.27 × 3,101.10
4. Step 4: Simplify right side
   3,986.70x = 17,053,786.20
5. Step 5: Solve for x
   x = 17,053,786.20/3,986.70
6. Step 6: Final answer
   x = 4,277.67