Finding the Fourth Proportional to 8,320.24, 12,480.33 and 3,388.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,320.24 : 12,480.33 = 3,388.72 : x
2. Step 2: Convert to fraction form
   8,320.24/12,480.33 = 3,388.72/x
3. Step 3: Cross multiply
   8,320.24x = 12,480.33 × 3,388.72
4. Step 4: Simplify right side
   8,320.24x = 42,292,343.88
5. Step 5: Solve for x
   x = 42,292,343.88/8,320.24
6. Step 6: Final answer
   x = 5,083.07