Finding the Fourth Proportional to 16,401.78, 24,611.78 and 10,165.18

Step by Step Solution

1. Step 1: Write the proportion equation
   16,401.78 : 24,611.78 = 10,165.18 : x
2. Step 2: Convert to fraction form
   16,401.78/24,611.78 = 10,165.18/x
3. Step 3: Cross multiply
   16,401.78x = 24,611.78 × 10,165.18
4. Step 4: Simplify right side
   16,401.78x = 250,183,173.82
5. Step 5: Solve for x
   x = 250,183,173.82/16,401.78
6. Step 6: Final answer
   x = 15,253.42