Finding the Fourth Proportional to 9,582.24, 13,223.48 and 5,390.49

Step by Step Solution

1. Step 1: Write the proportion equation
   9,582.24 : 13,223.48 = 5,390.49 : x
2. Step 2: Convert to fraction form
   9,582.24/13,223.48 = 5,390.49/x
3. Step 3: Cross multiply
   9,582.24x = 13,223.48 × 5,390.49
4. Step 4: Simplify right side
   9,582.24x = 71,281,069.45
5. Step 5: Solve for x
   x = 71,281,069.45/9,582.24
6. Step 6: Final answer
   x = 7,438.87