Finding the Fourth Proportional to 6,987.41, 9,642.38 and 3,843.57

Step by Step Solution

1. Step 1: Write the proportion equation
   6,987.41 : 9,642.38 = 3,843.57 : x
2. Step 2: Convert to fraction form
   6,987.41/9,642.38 = 3,843.57/x
3. Step 3: Cross multiply
   6,987.41x = 9,642.38 × 3,843.57
4. Step 4: Simplify right side
   6,987.41x = 37,061,143.28
5. Step 5: Solve for x
   x = 37,061,143.28/6,987.41
6. Step 6: Final answer
   x = 5,303.99