Finding the Fourth Proportional to 6,941.51, 9,578.72 and 3,956.78

Step by Step Solution

1. Step 1: Write the proportion equation
   6,941.51 : 9,578.72 = 3,956.78 : x
2. Step 2: Convert to fraction form
   6,941.51/9,578.72 = 3,956.78/x
3. Step 3: Cross multiply
   6,941.51x = 9,578.72 × 3,956.78
4. Step 4: Simplify right side
   6,941.51x = 37,900,891.88
5. Step 5: Solve for x
   x = 37,900,891.88/6,941.51
6. Step 6: Final answer
   x = 5,460.03