Finding the Fourth Proportional to 21,067.67, 29,073.37 and 11,636.15

Step by Step Solution

1. Step 1: Write the proportion equation
   21,067.67 : 29,073.37 = 11,636.15 : x
2. Step 2: Convert to fraction form
   21,067.67/29,073.37 = 11,636.15/x
3. Step 3: Cross multiply
   21,067.67x = 29,073.37 × 11,636.15
4. Step 4: Simplify right side
   21,067.67x = 338,302,094.33
5. Step 5: Solve for x
   x = 338,302,094.33/21,067.67
6. Step 6: Final answer
   x = 16,057.88