Finding the Fourth Proportional to 21,324.51, 31,915.62 and 16,046.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,324.51 : 31,915.62 = 16,046.69 : x
2. Step 2: Convert to fraction form
   21,324.51/31,915.62 = 16,046.69/x
3. Step 3: Cross multiply
   21,324.51x = 31,915.62 × 16,046.69
4. Step 4: Simplify right side
   21,324.51x = 512,139,900.72
5. Step 5: Solve for x
   x = 512,139,900.72/21,324.51
6. Step 6: Final answer
   x = 24,016.49