Finding the Fourth Proportional to 3,986.50, 5,499.48 and 2,808.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,986.50 : 5,499.48 = 2,808.22 : x
2. Step 2: Convert to fraction form
   3,986.50/5,499.48 = 2,808.22/x
3. Step 3: Cross multiply
   3,986.50x = 5,499.48 × 2,808.22
4. Step 4: Simplify right side
   3,986.50x = 15,443,749.73
5. Step 5: Solve for x
   x = 15,443,749.73/3,986.50
6. Step 6: Final answer
   x = 3,874.01