Finding the Fourth Proportional to 10,227.62, 14,105.66 and 7,212.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,227.62 : 14,105.66 = 7,212.78 : x
2. Step 2: Convert to fraction form
   10,227.62/14,105.66 = 7,212.78/x
3. Step 3: Cross multiply
   10,227.62x = 14,105.66 × 7,212.78
4. Step 4: Simplify right side
   10,227.62x = 101,741,022.33
5. Step 5: Solve for x
   x = 101,741,022.33/10,227.62
6. Step 6: Final answer
   x = 9,947.67