Finding the Fourth Proportional to 21,452.52, 29,604.42 and 12,021

Step by Step Solution

1. Step 1: Write the proportion equation
   21,452.52 : 29,604.42 = 12,021 : x
2. Step 2: Convert to fraction form
   21,452.52/29,604.42 = 12,021/x
3. Step 3: Cross multiply
   21,452.52x = 29,604.42 × 12,021
4. Step 4: Simplify right side
   21,452.52x = 355,874,732.82
5. Step 5: Solve for x
   x = 355,874,732.82/21,452.52
6. Step 6: Final answer
   x = 16,588.95