Finding the Fourth Proportional to 21,564.96, 29,759.34 and 12,133.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,564.96 : 29,759.34 = 12,133.50 : x
2. Step 2: Convert to fraction form
   21,564.96/29,759.34 = 12,133.50/x
3. Step 3: Cross multiply
   21,564.96x = 29,759.34 × 12,133.50
4. Step 4: Simplify right side
   21,564.96x = 361,084,951.89
5. Step 5: Solve for x
   x = 361,084,951.89/21,564.96
6. Step 6: Final answer
   x = 16,744.06