Finding the Fourth Proportional to 9,850.65, 14,778.72 and 5,471.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,850.65 : 14,778.72 = 5,471.18 : x
2. Step 2: Convert to fraction form
   9,850.65/14,778.72 = 5,471.18/x
3. Step 3: Cross multiply
   9,850.65x = 14,778.72 × 5,471.18
4. Step 4: Simplify right side
   9,850.65x = 80,857,018.82
5. Step 5: Solve for x
   x = 80,857,018.82/9,850.65
6. Step 6: Final answer
   x = 8,208.30