Finding the Fourth Proportional to 8,820.50, 13,231.49 and 3,823.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,820.50 : 13,231.49 = 3,823.20 : x
2. Step 2: Convert to fraction form
   8,820.50/13,231.49 = 3,823.20/x
3. Step 3: Cross multiply
   8,820.50x = 13,231.49 × 3,823.20
4. Step 4: Simplify right side
   8,820.50x = 50,586,613.45
5. Step 5: Solve for x
   x = 50,586,613.45/8,820.50
6. Step 6: Final answer
   x = 5,735.12