Finding the Fourth Proportional to 13,667.71, 18,864.51 and 8,949.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,667.71 : 18,864.51 = 8,949.25 : x
2. Step 2: Convert to fraction form
   13,667.71/18,864.51 = 8,949.25/x
3. Step 3: Cross multiply
   13,667.71x = 18,864.51 × 8,949.25
4. Step 4: Simplify right side
   13,667.71x = 168,823,216.12
5. Step 5: Solve for x
   x = 168,823,216.12/13,667.71
6. Step 6: Final answer
   x = 12,351.98