Finding the Fourth Proportional to 6,173.78, 8,519.82 and 3,379.28

Step by Step Solution

1. Step 1: Write the proportion equation
   6,173.78 : 8,519.82 = 3,379.28 : x
2. Step 2: Convert to fraction form
   6,173.78/8,519.82 = 3,379.28/x
3. Step 3: Cross multiply
   6,173.78x = 8,519.82 × 3,379.28
4. Step 4: Simplify right side
   6,173.78x = 28,790,857.33
5. Step 5: Solve for x
   x = 28,790,857.33/6,173.78
6. Step 6: Final answer
   x = 4,663.41