Finding the Fourth Proportional to 21,522.89, 29,701.41 and 12,091.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,522.89 : 29,701.41 = 12,091.25 : x
2. Step 2: Convert to fraction form
   21,522.89/29,701.41 = 12,091.25/x
3. Step 3: Cross multiply
   21,522.89x = 29,701.41 × 12,091.25
4. Step 4: Simplify right side
   21,522.89x = 359,127,173.66
5. Step 5: Solve for x
   x = 359,127,173.66/21,522.89
6. Step 6: Final answer
   x = 16,685.82