Finding the Fourth Proportional to 21,329.73, 31,969.69 and 16,047.78

Step by Step Solution

1. Step 1: Write the proportion equation
   21,329.73 : 31,969.69 = 16,047.78 : x
2. Step 2: Convert to fraction form
   21,329.73/31,969.69 = 16,047.78/x
3. Step 3: Cross multiply
   21,329.73x = 31,969.69 × 16,047.78
4. Step 4: Simplify right side
   21,329.73x = 513,042,391.78
5. Step 5: Solve for x
   x = 513,042,391.78/21,329.73
6. Step 6: Final answer
   x = 24,052.92