Finding the Fourth Proportional to 9,298.77, 12,831.41 and 5,521.29

Step by Step Solution

1. Step 1: Write the proportion equation
   9,298.77 : 12,831.41 = 5,521.29 : x
2. Step 2: Convert to fraction form
   9,298.77/12,831.41 = 5,521.29/x
3. Step 3: Cross multiply
   9,298.77x = 12,831.41 × 5,521.29
4. Step 4: Simplify right side
   9,298.77x = 70,845,949.52
5. Step 5: Solve for x
   x = 70,845,949.52/9,298.77
6. Step 6: Final answer
   x = 7,618.85