Finding the Fourth Proportional to 21,564.89, 29,759.56 and 12,133.46

Step by Step Solution

1. Step 1: Write the proportion equation
   21,564.89 : 29,759.56 = 12,133.46 : x
2. Step 2: Convert to fraction form
   21,564.89/29,759.56 = 12,133.46/x
3. Step 3: Cross multiply
   21,564.89x = 29,759.56 × 12,133.46
4. Step 4: Simplify right side
   21,564.89x = 361,086,251.75
5. Step 5: Solve for x
   x = 361,086,251.75/21,564.89
6. Step 6: Final answer
   x = 16,744.17