Finding the Fourth Proportional to 9,582.28, 13,223.46 and 5,390.44

Step by Step Solution

1. Step 1: Write the proportion equation
   9,582.28 : 13,223.46 = 5,390.44 : x
2. Step 2: Convert to fraction form
   9,582.28/13,223.46 = 5,390.44/x
3. Step 3: Cross multiply
   9,582.28x = 13,223.46 × 5,390.44
4. Step 4: Simplify right side
   9,582.28x = 71,280,267.72
5. Step 5: Solve for x
   x = 71,280,267.72/9,582.28
6. Step 6: Final answer
   x = 7,438.76