Finding the Fourth Proportional to 11,991.30, 17,983.44 and 5,747.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,991.30 : 17,983.44 = 5,747.82 : x
2. Step 2: Convert to fraction form
   11,991.30/17,983.44 = 5,747.82/x
3. Step 3: Cross multiply
   11,991.30x = 17,983.44 × 5,747.82
4. Step 4: Simplify right side
   11,991.30x = 103,365,576.10
5. Step 5: Solve for x
   x = 103,365,576.10/11,991.30
6. Step 6: Final answer
   x = 8,620.05