Finding the Fourth Proportional to 16,665.10, 24,850.64 and 16,515.09

Step by Step Solution

1. Step 1: Write the proportion equation
   16,665.10 : 24,850.64 = 16,515.09 : x
2. Step 2: Convert to fraction form
   16,665.10/24,850.64 = 16,515.09/x
3. Step 3: Cross multiply
   16,665.10x = 24,850.64 × 16,515.09
4. Step 4: Simplify right side
   16,665.10x = 410,410,597.45
5. Step 5: Solve for x
   x = 410,410,597.45/16,665.10
6. Step 6: Final answer
   x = 24,626.95