Finding the Fourth Proportional to 4,721.72, 7,081.88 and 2,748.29

Step by Step Solution

1. Step 1: Write the proportion equation
   4,721.72 : 7,081.88 = 2,748.29 : x
2. Step 2: Convert to fraction form
   4,721.72/7,081.88 = 2,748.29/x
3. Step 3: Cross multiply
   4,721.72x = 7,081.88 × 2,748.29
4. Step 4: Simplify right side
   4,721.72x = 19,463,010.83
5. Step 5: Solve for x
   x = 19,463,010.83/4,721.72
6. Step 6: Final answer
   x = 4,122.02