Finding the Fourth Proportional to 3,986.76, 5,501.64 and 2,308.24

Step by Step Solution

1. Step 1: Write the proportion equation
   3,986.76 : 5,501.64 = 2,308.24 : x
2. Step 2: Convert to fraction form
   3,986.76/5,501.64 = 2,308.24/x
3. Step 3: Cross multiply
   3,986.76x = 5,501.64 × 2,308.24
4. Step 4: Simplify right side
   3,986.76x = 12,699,091.76
5. Step 5: Solve for x
   x = 12,699,091.76/3,986.76
6. Step 6: Final answer
   x = 3,185.32