Finding the Fourth Proportional to 5,968.79, 8,235.42 and 3,978.01

Step by Step Solution

1. Step 1: Write the proportion equation
   5,968.79 : 8,235.42 = 3,978.01 : x
2. Step 2: Convert to fraction form
   5,968.79/8,235.42 = 3,978.01/x
3. Step 3: Cross multiply
   5,968.79x = 8,235.42 × 3,978.01
4. Step 4: Simplify right side
   5,968.79x = 32,760,600.87
5. Step 5: Solve for x
   x = 32,760,600.87/5,968.79
6. Step 6: Final answer
   x = 5,488.65