Finding the Fourth Proportional to 9,902.80, 14,859.67 and 5,522.73

Step by Step Solution

1. Step 1: Write the proportion equation
   9,902.80 : 14,859.67 = 5,522.73 : x
2. Step 2: Convert to fraction form
   9,902.80/14,859.67 = 5,522.73/x
3. Step 3: Cross multiply
   9,902.80x = 14,859.67 × 5,522.73
4. Step 4: Simplify right side
   9,902.80x = 82,065,945.30
5. Step 5: Solve for x
   x = 82,065,945.30/9,902.80
6. Step 6: Final answer
   x = 8,287.15