Finding the Fourth Proportional to 16,478.56, 22,739.16 and 9,404.02

Step by Step Solution

1. Step 1: Write the proportion equation
   16,478.56 : 22,739.16 = 9,404.02 : x
2. Step 2: Convert to fraction form
   16,478.56/22,739.16 = 9,404.02/x
3. Step 3: Cross multiply
   16,478.56x = 22,739.16 × 9,404.02
4. Step 4: Simplify right side
   16,478.56x = 213,839,515.42
5. Step 5: Solve for x
   x = 213,839,515.42/16,478.56
6. Step 6: Final answer
   x = 12,976.83