Finding the Fourth Proportional to 6,764.54, 10,141.40 and 3,431.05

Step by Step Solution

1. Step 1: Write the proportion equation
   6,764.54 : 10,141.40 = 3,431.05 : x
2. Step 2: Convert to fraction form
   6,764.54/10,141.40 = 3,431.05/x
3. Step 3: Cross multiply
   6,764.54x = 10,141.40 × 3,431.05
4. Step 4: Simplify right side
   6,764.54x = 34,795,633.69
5. Step 5: Solve for x
   x = 34,795,633.69/6,764.54
6. Step 6: Final answer
   x = 5,143.83