Finding the Fourth Proportional to 10,456.43, 14,452.83 and 9,187.97

Step by Step Solution

1. Step 1: Write the proportion equation
   10,456.43 : 14,452.83 = 9,187.97 : x
2. Step 2: Convert to fraction form
   10,456.43/14,452.83 = 9,187.97/x
3. Step 3: Cross multiply
   10,456.43x = 14,452.83 × 9,187.97
4. Step 4: Simplify right side
   10,456.43x = 132,792,096.19
5. Step 5: Solve for x
   x = 132,792,096.19/10,456.43
6. Step 6: Final answer
   x = 12,699.57