Finding the Fourth Proportional to 11,394.72, 17,091.99 and 3,997.47

Step by Step Solution

1. Step 1: Write the proportion equation
   11,394.72 : 17,091.99 = 3,997.47 : x
2. Step 2: Convert to fraction form
   11,394.72/17,091.99 = 3,997.47/x
3. Step 3: Cross multiply
   11,394.72x = 17,091.99 × 3,997.47
4. Step 4: Simplify right side
   11,394.72x = 68,324,717.27
5. Step 5: Solve for x
   x = 68,324,717.27/11,394.72
6. Step 6: Final answer
   x = 5,996.17