Finding the Fourth Proportional to 17,162.96, 25,640.42 and 10,872.63

Step by Step Solution

1. Step 1: Write the proportion equation
   17,162.96 : 25,640.42 = 10,872.63 : x
2. Step 2: Convert to fraction form
   17,162.96/25,640.42 = 10,872.63/x
3. Step 3: Cross multiply
   17,162.96x = 25,640.42 × 10,872.63
4. Step 4: Simplify right side
   17,162.96x = 278,778,745.34
5. Step 5: Solve for x
   x = 278,778,745.34/17,162.96
6. Step 6: Final answer
   x = 16,243.05