Finding the Fourth Proportional to 12,434.33, 17,161.05 and 8,456.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,434.33 : 17,161.05 = 8,456.72 : x
2. Step 2: Convert to fraction form
   12,434.33/17,161.05 = 8,456.72/x
3. Step 3: Cross multiply
   12,434.33x = 17,161.05 × 8,456.72
4. Step 4: Simplify right side
   12,434.33x = 145,126,108.95
5. Step 5: Solve for x
   x = 145,126,108.95/12,434.33
6. Step 6: Final answer
   x = 11,671.41