Finding the Fourth Proportional to 21,222.53, 29,291.50 and 12,268.79

Step by Step Solution

1. Step 1: Write the proportion equation
   21,222.53 : 29,291.50 = 12,268.79 : x
2. Step 2: Convert to fraction form
   21,222.53/29,291.50 = 12,268.79/x
3. Step 3: Cross multiply
   21,222.53x = 29,291.50 × 12,268.79
4. Step 4: Simplify right side
   21,222.53x = 359,371,262.29
5. Step 5: Solve for x
   x = 359,371,262.29/21,222.53
6. Step 6: Final answer
   x = 16,933.48