Finding the Fourth Proportional to 6,987.72, 9,643.02 and 3,843.88

Step by Step Solution

1. Step 1: Write the proportion equation
   6,987.72 : 9,643.02 = 3,843.88 : x
2. Step 2: Convert to fraction form
   6,987.72/9,643.02 = 3,843.88/x
3. Step 3: Cross multiply
   6,987.72x = 9,643.02 × 3,843.88
4. Step 4: Simplify right side
   6,987.72x = 37,066,611.72
5. Step 5: Solve for x
   x = 37,066,611.72/6,987.72
6. Step 6: Final answer
   x = 5,304.54