Finding the Fourth Proportional to 21,453, 32,196.78 and 11,067.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,453 : 32,196.78 = 11,067.72 : x
2. Step 2: Convert to fraction form
   21,453/32,196.78 = 11,067.72/x
3. Step 3: Cross multiply
   21,453x = 32,196.78 × 11,067.72
4. Step 4: Simplify right side
   21,453x = 356,344,945.94
5. Step 5: Solve for x
   x = 356,344,945.94/21,453
6. Step 6: Final answer
   x = 16,610.49