Finding the Fourth Proportional to 21,654.20, 29,882.22 and 12,222.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,654.20 : 29,882.22 = 12,222.69 : x
2. Step 2: Convert to fraction form
   21,654.20/29,882.22 = 12,222.69/x
3. Step 3: Cross multiply
   21,654.20x = 29,882.22 × 12,222.69
4. Step 4: Simplify right side
   21,654.20x = 365,241,111.57
5. Step 5: Solve for x
   x = 365,241,111.57/21,654.20
6. Step 6: Final answer
   x = 16,866.99