Finding the Fourth Proportional to 8,224.72, 12,338.91 and 3,839.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,224.72 : 12,338.91 = 3,839.78 : x
2. Step 2: Convert to fraction form
   8,224.72/12,338.91 = 3,839.78/x
3. Step 3: Cross multiply
   8,224.72x = 12,338.91 × 3,839.78
4. Step 4: Simplify right side
   8,224.72x = 47,378,730.69
5. Step 5: Solve for x
   x = 47,378,730.69/8,224.72
6. Step 6: Final answer
   x = 5,760.53