Finding the Fourth Proportional to 8,268.90, 12,404.72 and 3,831

Step by Step Solution

1. Step 1: Write the proportion equation
   8,268.90 : 12,404.72 = 3,831 : x
2. Step 2: Convert to fraction form
   8,268.90/12,404.72 = 3,831/x
3. Step 3: Cross multiply
   8,268.90x = 12,404.72 × 3,831
4. Step 4: Simplify right side
   8,268.90x = 47,522,463.17
5. Step 5: Solve for x
   x = 47,522,463.17/8,268.90
6. Step 6: Final answer
   x = 5,747.13