Finding the Fourth Proportional to 5,680.32, 7,839.20 and 3,196.48

Step by Step Solution

1. Step 1: Write the proportion equation
   5,680.32 : 7,839.20 = 3,196.48 : x
2. Step 2: Convert to fraction form
   5,680.32/7,839.20 = 3,196.48/x
3. Step 3: Cross multiply
   5,680.32x = 7,839.20 × 3,196.48
4. Step 4: Simplify right side
   5,680.32x = 25,057,846.02
5. Step 5: Solve for x
   x = 25,057,846.02/5,680.32
6. Step 6: Final answer
   x = 4,411.34