Finding the Fourth Proportional to 16,872.97, 23,284.87 and 9,319.49

Step by Step Solution

1. Step 1: Write the proportion equation
   16,872.97 : 23,284.87 = 9,319.49 : x
2. Step 2: Convert to fraction form
   16,872.97/23,284.87 = 9,319.49/x
3. Step 3: Cross multiply
   16,872.97x = 23,284.87 × 9,319.49
4. Step 4: Simplify right side
   16,872.97x = 217,003,113.12
5. Step 5: Solve for x
   x = 217,003,113.12/16,872.97
6. Step 6: Final answer
   x = 12,860.99