Finding the Fourth Proportional to 7,141.42, 9,855.42 and 3,997.42

Step by Step Solution

1. Step 1: Write the proportion equation
   7,141.42 : 9,855.42 = 3,997.42 : x
2. Step 2: Convert to fraction form
   7,141.42/9,855.42 = 3,997.42/x
3. Step 3: Cross multiply
   7,141.42x = 9,855.42 × 3,997.42
4. Step 4: Simplify right side
   7,141.42x = 39,396,253.02
5. Step 5: Solve for x
   x = 39,396,253.02/7,141.42
6. Step 6: Final answer
   x = 5,516.59