Finding the Fourth Proportional to 19,667.97, 27,136.98 and 12,015.27

Step by Step Solution

1. Step 1: Write the proportion equation
   19,667.97 : 27,136.98 = 12,015.27 : x
2. Step 2: Convert to fraction form
   19,667.97/27,136.98 = 12,015.27/x
3. Step 3: Cross multiply
   19,667.97x = 27,136.98 × 12,015.27
4. Step 4: Simplify right side
   19,667.97x = 326,058,141.68
5. Step 5: Solve for x
   x = 326,058,141.68/19,667.97
6. Step 6: Final answer
   x = 16,578.13