Finding the Fourth Proportional to 21,233.57, 29,297.56 and 12,849.89

Step by Step Solution

1. Step 1: Write the proportion equation
   21,233.57 : 29,297.56 = 12,849.89 : x
2. Step 2: Convert to fraction form
   21,233.57/29,297.56 = 12,849.89/x
3. Step 3: Cross multiply
   21,233.57x = 29,297.56 × 12,849.89
4. Step 4: Simplify right side
   21,233.57x = 376,470,423.27
5. Step 5: Solve for x
   x = 376,470,423.27/21,233.57
6. Step 6: Final answer
   x = 17,729.96