Finding the Fourth Proportional to 6,939.82, 9,577.76 and 3,956.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6,939.82 : 9,577.76 = 3,956.15 : x
2. Step 2: Convert to fraction form
   6,939.82/9,577.76 = 3,956.15/x
3. Step 3: Cross multiply
   6,939.82x = 9,577.76 × 3,956.15
4. Step 4: Simplify right side
   6,939.82x = 37,891,055.22
5. Step 5: Solve for x
   x = 37,891,055.22/6,939.82
6. Step 6: Final answer
   x = 5,459.95