Finding the Fourth Proportional to 3,986.98, 5,501.80 and 2,308.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,986.98 : 5,501.80 = 2,308.27 : x
2. Step 2: Convert to fraction form
   3,986.98/5,501.80 = 2,308.27/x
3. Step 3: Cross multiply
   3,986.98x = 5,501.80 × 2,308.27
4. Step 4: Simplify right side
   3,986.98x = 12,699,662.92
5. Step 5: Solve for x
   x = 12,699,662.92/3,986.98
6. Step 6: Final answer
   x = 3,185.28