Finding the Fourth Proportional to 7,044.53, 9,721.76 and 3,900.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,044.53 : 9,721.76 = 3,900.72 : x
2. Step 2: Convert to fraction form
   7,044.53/9,721.76 = 3,900.72/x
3. Step 3: Cross multiply
   7,044.53x = 9,721.76 × 3,900.72
4. Step 4: Simplify right side
   7,044.53x = 37,921,839.33
5. Step 5: Solve for x
   x = 37,921,839.33/7,044.53
6. Step 6: Final answer
   x = 5,383.16