Finding the Fourth Proportional to 10,979.47, 16,469.88 and 4,404.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,979.47 : 16,469.88 = 4,404.80 : x
2. Step 2: Convert to fraction form
   10,979.47/16,469.88 = 4,404.80/x
3. Step 3: Cross multiply
   10,979.47x = 16,469.88 × 4,404.80
4. Step 4: Simplify right side
   10,979.47x = 72,546,527.42
5. Step 5: Solve for x
   x = 72,546,527.42/10,979.47
6. Step 6: Final answer
   x = 6,607.47