Finding the Fourth Proportional to 8,303.72, 12,456.99 and 3,039.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,303.72 : 12,456.99 = 3,039.12 : x
2. Step 2: Convert to fraction form
   8,303.72/12,456.99 = 3,039.12/x
3. Step 3: Cross multiply
   8,303.72x = 12,456.99 × 3,039.12
4. Step 4: Simplify right side
   8,303.72x = 37,858,287.45
5. Step 5: Solve for x
   x = 37,858,287.45/8,303.72
6. Step 6: Final answer
   x = 4,559.20