Finding the Fourth Proportional to 9,521.86, 13,165.25 and 8,339.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,521.86 : 13,165.25 = 8,339.54 : x
2. Step 2: Convert to fraction form
   9,521.86/13,165.25 = 8,339.54/x
3. Step 3: Cross multiply
   9,521.86x = 13,165.25 × 8,339.54
4. Step 4: Simplify right side
   9,521.86x = 109,792,087.29
5. Step 5: Solve for x
   x = 109,792,087.29/9,521.86
6. Step 6: Final answer
   x = 11,530.54