Finding the Fourth Proportional to 9,015.48, 12,443.82 and 5,290.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,015.48 : 12,443.82 = 5,290.68 : x
2. Step 2: Convert to fraction form
   9,015.48/12,443.82 = 5,290.68/x
3. Step 3: Cross multiply
   9,015.48x = 12,443.82 × 5,290.68
4. Step 4: Simplify right side
   9,015.48x = 65,836,269.60
5. Step 5: Solve for x
   x = 65,836,269.60/9,015.48
6. Step 6: Final answer
   x = 7,302.58