Finding the Fourth Proportional to 16,234.62, 24,390.78 and 10,402.62

Step by Step Solution

1. Step 1: Write the proportion equation
   16,234.62 : 24,390.78 = 10,402.62 : x
2. Step 2: Convert to fraction form
   16,234.62/24,390.78 = 10,402.62/x
3. Step 3: Cross multiply
   16,234.62x = 24,390.78 × 10,402.62
4. Step 4: Simplify right side
   16,234.62x = 253,728,015.84
5. Step 5: Solve for x
   x = 253,728,015.84/16,234.62
6. Step 6: Final answer
   x = 15,628.82