Finding the Fourth Proportional to 6,918.31, 10,379.46 and 3,409.37

Step by Step Solution

1. Step 1: Write the proportion equation
   6,918.31 : 10,379.46 = 3,409.37 : x
2. Step 2: Convert to fraction form
   6,918.31/10,379.46 = 3,409.37/x
3. Step 3: Cross multiply
   6,918.31x = 10,379.46 × 3,409.37
4. Step 4: Simplify right side
   6,918.31x = 35,387,429.37
5. Step 5: Solve for x
   x = 35,387,429.37/6,918.31
6. Step 6: Final answer
   x = 5,115.04