Finding the Fourth Proportional to 6,665.40, 10,004.28 and 3,380.82

Step by Step Solution

1. Step 1: Write the proportion equation
   6,665.40 : 10,004.28 = 3,380.82 : x
2. Step 2: Convert to fraction form
   6,665.40/10,004.28 = 3,380.82/x
3. Step 3: Cross multiply
   6,665.40x = 10,004.28 × 3,380.82
4. Step 4: Simplify right side
   6,665.40x = 33,822,669.91
5. Step 5: Solve for x
   x = 33,822,669.91/6,665.40
6. Step 6: Final answer
   x = 5,074.36