Finding the Fourth Proportional to 16,498.40, 24,714.09 and 13,172.27

Step by Step Solution

1. Step 1: Write the proportion equation
   16,498.40 : 24,714.09 = 13,172.27 : x
2. Step 2: Convert to fraction form
   16,498.40/24,714.09 = 13,172.27/x
3. Step 3: Cross multiply
   16,498.40x = 24,714.09 × 13,172.27
4. Step 4: Simplify right side
   16,498.40x = 325,540,666.28
5. Step 5: Solve for x
   x = 325,540,666.28/16,498.40
6. Step 6: Final answer
   x = 19,731.65