Finding the Fourth Proportional to 7,308.72, 10,077.84 and 5,978.16

Step by Step Solution

1. Step 1: Write the proportion equation
   7,308.72 : 10,077.84 = 5,978.16 : x
2. Step 2: Convert to fraction form
   7,308.72/10,077.84 = 5,978.16/x
3. Step 3: Cross multiply
   7,308.72x = 10,077.84 × 5,978.16
4. Step 4: Simplify right side
   7,308.72x = 60,246,939.97
5. Step 5: Solve for x
   x = 60,246,939.97/7,308.72
6. Step 6: Final answer
   x = 8,243.16