Finding the Fourth Proportional to 5,939.33, 8,910.61 and 1,991.23

Step by Step Solution

1. Step 1: Write the proportion equation
   5,939.33 : 8,910.61 = 1,991.23 : x
2. Step 2: Convert to fraction form
   5,939.33/8,910.61 = 1,991.23/x
3. Step 3: Cross multiply
   5,939.33x = 8,910.61 × 1,991.23
4. Step 4: Simplify right side
   5,939.33x = 17,743,096.82
5. Step 5: Solve for x
   x = 17,743,096.82/5,939.33
6. Step 6: Final answer
   x = 2,987.39