Finding the Fourth Proportional to 12,645.72, 17,453.75 and 8,397.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,645.72 : 17,453.75 = 8,397.14 : x
2. Step 2: Convert to fraction form
   12,645.72/17,453.75 = 8,397.14/x
3. Step 3: Cross multiply
   12,645.72x = 17,453.75 × 8,397.14
4. Step 4: Simplify right side
   12,645.72x = 146,561,582.28
5. Step 5: Solve for x
   x = 146,561,582.28/12,645.72
6. Step 6: Final answer
   x = 11,589.82