Finding the Fourth Proportional to 16,478.16, 22,734.60 and 9,404.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16,478.16 : 22,734.60 = 9,404.88 : x
2. Step 2: Convert to fraction form
   16,478.16/22,734.60 = 9,404.88/x
3. Step 3: Cross multiply
   16,478.16x = 22,734.60 × 9,404.88
4. Step 4: Simplify right side
   16,478.16x = 213,816,184.85
5. Step 5: Solve for x
   x = 213,816,184.85/16,478.16
6. Step 6: Final answer
   x = 12,975.73