Finding the Fourth Proportional to 6,665.46, 9,997.20 and 4,192.71

Step by Step Solution

1. Step 1: Write the proportion equation
   6,665.46 : 9,997.20 = 4,192.71 : x
2. Step 2: Convert to fraction form
   6,665.46/9,997.20 = 4,192.71/x
3. Step 3: Cross multiply
   6,665.46x = 9,997.20 × 4,192.71
4. Step 4: Simplify right side
   6,665.46x = 41,915,360.41
5. Step 5: Solve for x
   x = 41,915,360.41/6,665.46
6. Step 6: Final answer
   x = 6,288.44