Finding the Fourth Proportional to 11,382.56, 17,081.52 and 3,987.08

Step by Step Solution

1. Step 1: Write the proportion equation
   11,382.56 : 17,081.52 = 3,987.08 : x
2. Step 2: Convert to fraction form
   11,382.56/17,081.52 = 3,987.08/x
3. Step 3: Cross multiply
   11,382.56x = 17,081.52 × 3,987.08
4. Step 4: Simplify right side
   11,382.56x = 68,105,429.47
5. Step 5: Solve for x
   x = 68,105,429.47/11,382.56
6. Step 6: Final answer
   x = 5,983.31