Finding the Fourth Proportional to 5,768.62, 7,961.42 and 3,997.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,768.62 : 7,961.42 = 3,997.15 : x
2. Step 2: Convert to fraction form
   5,768.62/7,961.42 = 3,997.15/x
3. Step 3: Cross multiply
   5,768.62x = 7,961.42 × 3,997.15
4. Step 4: Simplify right side
   5,768.62x = 31,822,980.04
5. Step 5: Solve for x
   x = 31,822,980.04/5,768.62
6. Step 6: Final answer
   x = 5,516.57