Finding the Fourth Proportional to 9,019.89, 12,443.22 and 5,480.73

Step by Step Solution

1. Step 1: Write the proportion equation
   9,019.89 : 12,443.22 = 5,480.73 : x
2. Step 2: Convert to fraction form
   9,019.89/12,443.22 = 5,480.73/x
3. Step 3: Cross multiply
   9,019.89x = 12,443.22 × 5,480.73
4. Step 4: Simplify right side
   9,019.89x = 68,197,929.15
5. Step 5: Solve for x
   x = 68,197,929.15/9,019.89
6. Step 6: Final answer
   x = 7,560.84