Finding the Fourth Proportional to 21,222.48, 29,297.41 and 13,267.27

Step by Step Solution

1. Step 1: Write the proportion equation
   21,222.48 : 29,297.41 = 13,267.27 : x
2. Step 2: Convert to fraction form
   21,222.48/29,297.41 = 13,267.27/x
3. Step 3: Cross multiply
   21,222.48x = 29,297.41 × 13,267.27
4. Step 4: Simplify right side
   21,222.48x = 388,696,648.77
5. Step 5: Solve for x
   x = 388,696,648.77/21,222.48
6. Step 6: Final answer
   x = 18,315.33