Finding the Fourth Proportional to 10,957.67, 16,440.15 and 4,382.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,957.67 : 16,440.15 = 4,382.09 : x
2. Step 2: Convert to fraction form
   10,957.67/16,440.15 = 4,382.09/x
3. Step 3: Cross multiply
   10,957.67x = 16,440.15 × 4,382.09
4. Step 4: Simplify right side
   10,957.67x = 72,042,216.91
5. Step 5: Solve for x
   x = 72,042,216.91/10,957.67
6. Step 6: Final answer
   x = 6,574.59