Finding the Fourth Proportional to 6,073.92, 8,376.48 and 3,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,073.92 : 8,376.48 = 3,978.72 : x
2. Step 2: Convert to fraction form
   6,073.92/8,376.48 = 3,978.72/x
3. Step 3: Cross multiply
   6,073.92x = 8,376.48 × 3,978.72
4. Step 4: Simplify right side
   6,073.92x = 33,327,668.51
5. Step 5: Solve for x
   x = 33,327,668.51/6,073.92
6. Step 6: Final answer
   x = 5,487.01