Finding the Fourth Proportional to 21,522.69, 29,698.02 and 12,089.43

Step by Step Solution

1. Step 1: Write the proportion equation
   21,522.69 : 29,698.02 = 12,089.43 : x
2. Step 2: Convert to fraction form
   21,522.69/29,698.02 = 12,089.43/x
3. Step 3: Cross multiply
   21,522.69x = 29,698.02 × 12,089.43
4. Step 4: Simplify right side
   21,522.69x = 359,032,133.93
5. Step 5: Solve for x
   x = 359,032,133.93/21,522.69
6. Step 6: Final answer
   x = 16,681.56