Finding the Fourth Proportional to 3,807.25, 5,680.16 and 3,391.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,807.25 : 5,680.16 = 3,391.72 : x
2. Step 2: Convert to fraction form
   3,807.25/5,680.16 = 3,391.72/x
3. Step 3: Cross multiply
   3,807.25x = 5,680.16 × 3,391.72
4. Step 4: Simplify right side
   3,807.25x = 19,265,512.28
5. Step 5: Solve for x
   x = 19,265,512.28/3,807.25
6. Step 6: Final answer
   x = 5,060.22