Finding the Fourth Proportional to 9,900.33, 14,847.31 and 5,217.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,900.33 : 14,847.31 = 5,217.72 : x
2. Step 2: Convert to fraction form
   9,900.33/14,847.31 = 5,217.72/x
3. Step 3: Cross multiply
   9,900.33x = 14,847.31 × 5,217.72
4. Step 4: Simplify right side
   9,900.33x = 77,469,106.33
5. Step 5: Solve for x
   x = 77,469,106.33/9,900.33
6. Step 6: Final answer
   x = 7,824.90