Finding the Fourth Proportional to 9,019.62, 12,447.06 and 5,245

Step by Step Solution

1. Step 1: Write the proportion equation
   9,019.62 : 12,447.06 = 5,245 : x
2. Step 2: Convert to fraction form
   9,019.62/12,447.06 = 5,245/x
3. Step 3: Cross multiply
   9,019.62x = 12,447.06 × 5,245
4. Step 4: Simplify right side
   9,019.62x = 65,284,829.70
5. Step 5: Solve for x
   x = 65,284,829.70/9,019.62
6. Step 6: Final answer
   x = 7,238.09