Finding the Fourth Proportional to 5,103.72, 7,643.52 and 3,347.64

Step by Step Solution

1. Step 1: Write the proportion equation
   5,103.72 : 7,643.52 = 3,347.64 : x
2. Step 2: Convert to fraction form
   5,103.72/7,643.52 = 3,347.64/x
3. Step 3: Cross multiply
   5,103.72x = 7,643.52 × 3,347.64
4. Step 4: Simplify right side
   5,103.72x = 25,587,753.29
5. Step 5: Solve for x
   x = 25,587,753.29/5,103.72
6. Step 6: Final answer
   x = 5,013.55