Finding the Fourth Proportional to 11,789.43, 17,684.14 and 3,998.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,789.43 : 17,684.14 = 3,998.31 : x
2. Step 2: Convert to fraction form
   11,789.43/17,684.14 = 3,998.31/x
3. Step 3: Cross multiply
   11,789.43x = 17,684.14 × 3,998.31
4. Step 4: Simplify right side
   11,789.43x = 70,706,673.80
5. Step 5: Solve for x
   x = 70,706,673.80/11,789.43
6. Step 6: Final answer
   x = 5,997.46