Finding the Fourth Proportional to 4,911.72, 7,358.16 and 2,721.48

Step by Step Solution

1. Step 1: Write the proportion equation
   4,911.72 : 7,358.16 = 2,721.48 : x
2. Step 2: Convert to fraction form
   4,911.72/7,358.16 = 2,721.48/x
3. Step 3: Cross multiply
   4,911.72x = 7,358.16 × 2,721.48
4. Step 4: Simplify right side
   4,911.72x = 20,025,085.28
5. Step 5: Solve for x
   x = 20,025,085.28/4,911.72
6. Step 6: Final answer
   x = 4,077.00