Finding the Fourth Proportional to 10,818.36, 16,227.72 and 4,979.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,818.36 : 16,227.72 = 4,979.88 : x
2. Step 2: Convert to fraction form
   10,818.36/16,227.72 = 4,979.88/x
3. Step 3: Cross multiply
   10,818.36x = 16,227.72 × 4,979.88
4. Step 4: Simplify right side
   10,818.36x = 80,812,098.27
5. Step 5: Solve for x
   x = 80,812,098.27/10,818.36
6. Step 6: Final answer
   x = 7,469.90