Finding the Fourth Proportional to 16,648.50, 24,942.63 and 10,405.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,648.50 : 24,942.63 = 10,405.50 : x
2. Step 2: Convert to fraction form
   16,648.50/24,942.63 = 10,405.50/x
3. Step 3: Cross multiply
   16,648.50x = 24,942.63 × 10,405.50
4. Step 4: Simplify right side
   16,648.50x = 259,540,536.47
5. Step 5: Solve for x
   x = 259,540,536.47/16,648.50
6. Step 6: Final answer
   x = 15,589.42