Finding the Fourth Proportional to 11,377.02, 17,072.43 and 3,987

Step by Step Solution

1. Step 1: Write the proportion equation
   11,377.02 : 17,072.43 = 3,987 : x
2. Step 2: Convert to fraction form
   11,377.02/17,072.43 = 3,987/x
3. Step 3: Cross multiply
   11,377.02x = 17,072.43 × 3,987
4. Step 4: Simplify right side
   11,377.02x = 68,067,778.41
5. Step 5: Solve for x
   x = 68,067,778.41/11,377.02
6. Step 6: Final answer
   x = 5,982.92