Finding the Fourth Proportional to 5,781.72, 7,978.14 and 3,297.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,781.72 : 7,978.14 = 3,297.72 : x
2. Step 2: Convert to fraction form
   5,781.72/7,978.14 = 3,297.72/x
3. Step 3: Cross multiply
   5,781.72x = 7,978.14 × 3,297.72
4. Step 4: Simplify right side
   5,781.72x = 26,309,671.84
5. Step 5: Solve for x
   x = 26,309,671.84/5,781.72
6. Step 6: Final answer
   x = 4,550.49