Finding the Fourth Proportional to 4,920.72, 7,371.35 and 3,689.52

Step by Step Solution

1. Step 1: Write the proportion equation
   4,920.72 : 7,371.35 = 3,689.52 : x
2. Step 2: Convert to fraction form
   4,920.72/7,371.35 = 3,689.52/x
3. Step 3: Cross multiply
   4,920.72x = 7,371.35 × 3,689.52
4. Step 4: Simplify right side
   4,920.72x = 27,196,743.25
5. Step 5: Solve for x
   x = 27,196,743.25/4,920.72
6. Step 6: Final answer
   x = 5,526.98