Finding the Fourth Proportional to 14,085.29, 21,132.34 and 8,469.41

Step by Step Solution

1. Step 1: Write the proportion equation
   14,085.29 : 21,132.34 = 8,469.41 : x
2. Step 2: Convert to fraction form
   14,085.29/21,132.34 = 8,469.41/x
3. Step 3: Cross multiply
   14,085.29x = 21,132.34 × 8,469.41
4. Step 4: Simplify right side
   14,085.29x = 178,978,491.39
5. Step 5: Solve for x
   x = 178,978,491.39/14,085.29
6. Step 6: Final answer
   x = 12,706.76