Finding the Fourth Proportional to 6,742.94, 10,118.72 and 3,278.30

Step by Step Solution

1. Step 1: Write the proportion equation
   6,742.94 : 10,118.72 = 3,278.30 : x
2. Step 2: Convert to fraction form
   6,742.94/10,118.72 = 3,278.30/x
3. Step 3: Cross multiply
   6,742.94x = 10,118.72 × 3,278.30
4. Step 4: Simplify right side
   6,742.94x = 33,172,157.38
5. Step 5: Solve for x
   x = 33,172,157.38/6,742.94
6. Step 6: Final answer
   x = 4,919.54