Finding the Fourth Proportional to 16,424.20, 22,665.39 and 8,870.53

Step by Step Solution

1. Step 1: Write the proportion equation
   16,424.20 : 22,665.39 = 8,870.53 : x
2. Step 2: Convert to fraction form
   16,424.20/22,665.39 = 8,870.53/x
3. Step 3: Cross multiply
   16,424.20x = 22,665.39 × 8,870.53
4. Step 4: Simplify right side
   16,424.20x = 201,054,021.96
5. Step 5: Solve for x
   x = 201,054,021.96/16,424.20
6. Step 6: Final answer
   x = 12,241.33