Finding the Fourth Proportional to 9,019.74, 12,449.87 and 5,244.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,019.74 : 12,449.87 = 5,244.60 : x
2. Step 2: Convert to fraction form
   9,019.74/12,449.87 = 5,244.60/x
3. Step 3: Cross multiply
   9,019.74x = 12,449.87 × 5,244.60
4. Step 4: Simplify right side
   9,019.74x = 65,294,561.98
5. Step 5: Solve for x
   x = 65,294,561.98/9,019.74
6. Step 6: Final answer
   x = 7,239.07