Finding the Fourth Proportional to 9,300.95, 12,831.01 and 5,521.97

Step by Step Solution

1. Step 1: Write the proportion equation
   9,300.95 : 12,831.01 = 5,521.97 : x
2. Step 2: Convert to fraction form
   9,300.95/12,831.01 = 5,521.97/x
3. Step 3: Cross multiply
   9,300.95x = 12,831.01 × 5,521.97
4. Step 4: Simplify right side
   9,300.95x = 70,852,452.29
5. Step 5: Solve for x
   x = 70,852,452.29/9,300.95
6. Step 6: Final answer
   x = 7,617.77