Finding the Fourth Proportional to 16,519.20, 22,790.50 and 10,856.98

Step by Step Solution

1. Step 1: Write the proportion equation
   16,519.20 : 22,790.50 = 10,856.98 : x
2. Step 2: Convert to fraction form
   16,519.20/22,790.50 = 10,856.98/x
3. Step 3: Cross multiply
   16,519.20x = 22,790.50 × 10,856.98
4. Step 4: Simplify right side
   16,519.20x = 247,436,002.69
5. Step 5: Solve for x
   x = 247,436,002.69/16,519.20
6. Step 6: Final answer
   x = 14,978.69