Finding the Fourth Proportional to 16,479.18, 22,742.88 and 9,406.62

Step by Step Solution

1. Step 1: Write the proportion equation
   16,479.18 : 22,742.88 = 9,406.62 : x
2. Step 2: Convert to fraction form
   16,479.18/22,742.88 = 9,406.62/x
3. Step 3: Cross multiply
   16,479.18x = 22,742.88 × 9,406.62
4. Step 4: Simplify right side
   16,479.18x = 213,933,629.87
5. Step 5: Solve for x
   x = 213,933,629.87/16,479.18
6. Step 6: Final answer
   x = 12,982.06