Finding the Fourth Proportional to 21,273.12, 31,929.12 and 16,326.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,273.12 : 31,929.12 = 16,326.72 : x
2. Step 2: Convert to fraction form
   21,273.12/31,929.12 = 16,326.72/x
3. Step 3: Cross multiply
   21,273.12x = 31,929.12 × 16,326.72
4. Step 4: Simplify right side
   21,273.12x = 521,297,802.09
5. Step 5: Solve for x
   x = 521,297,802.09/21,273.12
6. Step 6: Final answer
   x = 24,505.00