Finding the Fourth Proportional to 3,997.61, 5,997.42 and 2,829.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,997.61 : 5,997.42 = 2,829.89 : x
2. Step 2: Convert to fraction form
   3,997.61/5,997.42 = 2,829.89/x
3. Step 3: Cross multiply
   3,997.61x = 5,997.42 × 2,829.89
4. Step 4: Simplify right side
   3,997.61x = 16,972,053.88
5. Step 5: Solve for x
   x = 16,972,053.88/3,997.61
6. Step 6: Final answer
   x = 4,245.56