Finding the Fourth Proportional to 5,056.31, 6,978.15 and 3,067.96

Step by Step Solution

1. Step 1: Write the proportion equation
   5,056.31 : 6,978.15 = 3,067.96 : x
2. Step 2: Convert to fraction form
   5,056.31/6,978.15 = 3,067.96/x
3. Step 3: Cross multiply
   5,056.31x = 6,978.15 × 3,067.96
4. Step 4: Simplify right side
   5,056.31x = 21,408,680.71
5. Step 5: Solve for x
   x = 21,408,680.71/5,056.31
6. Step 6: Final answer
   x = 4,234.05