Finding the Fourth Proportional to 21,522.51, 29,699.46 and 12,089.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,522.51 : 29,699.46 = 12,089.25 : x
2. Step 2: Convert to fraction form
   21,522.51/29,699.46 = 12,089.25/x
3. Step 3: Cross multiply
   21,522.51x = 29,699.46 × 12,089.25
4. Step 4: Simplify right side
   21,522.51x = 359,044,196.81
5. Step 5: Solve for x
   x = 359,044,196.81/21,522.51
6. Step 6: Final answer
   x = 16,682.26