Finding the Fourth Proportional to 9,582.57, 13,223.79 and 5,390.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,582.57 : 13,223.79 = 5,390.82 : x
2. Step 2: Convert to fraction form
   9,582.57/13,223.79 = 5,390.82/x
3. Step 3: Cross multiply
   9,582.57x = 13,223.79 × 5,390.82
4. Step 4: Simplify right side
   9,582.57x = 71,287,071.61
5. Step 5: Solve for x
   x = 71,287,071.61/9,582.57
6. Step 6: Final answer
   x = 7,439.24