Finding the Fourth Proportional to 5,057.58, 6,978.72 and 3,067.80

Step by Step Solution

1. Step 1: Write the proportion equation
   5,057.58 : 6,978.72 = 3,067.80 : x
2. Step 2: Convert to fraction form
   5,057.58/6,978.72 = 3,067.80/x
3. Step 3: Cross multiply
   5,057.58x = 6,978.72 × 3,067.80
4. Step 4: Simplify right side
   5,057.58x = 21,409,317.22
5. Step 5: Solve for x
   x = 21,409,317.22/5,057.58
6. Step 6: Final answer
   x = 4,233.11