Finding the Fourth Proportional to 6,940.05, 9,577.98 and 3,956.43

Step by Step Solution

1. Step 1: Write the proportion equation
   6,940.05 : 9,577.98 = 3,956.43 : x
2. Step 2: Convert to fraction form
   6,940.05/9,577.98 = 3,956.43/x
3. Step 3: Cross multiply
   6,940.05x = 9,577.98 × 3,956.43
4. Step 4: Simplify right side
   6,940.05x = 37,894,607.41
5. Step 5: Solve for x
   x = 37,894,607.41/6,940.05
6. Step 6: Final answer
   x = 5,460.28