Finding the Fourth Proportional to 14,057.43, 21,096.59 and 6,661.91

Step by Step Solution

1. Step 1: Write the proportion equation
   14,057.43 : 21,096.59 = 6,661.91 : x
2. Step 2: Convert to fraction form
   14,057.43/21,096.59 = 6,661.91/x
3. Step 3: Cross multiply
   14,057.43x = 21,096.59 × 6,661.91
4. Step 4: Simplify right side
   14,057.43x = 140,543,603.32
5. Step 5: Solve for x
   x = 140,543,603.32/14,057.43
6. Step 6: Final answer
   x = 9,997.82