Finding the Fourth Proportional to 7,049.46, 9,728.33 and 3,905.63

Step by Step Solution

1. Step 1: Write the proportion equation
   7,049.46 : 9,728.33 = 3,905.63 : x
2. Step 2: Convert to fraction form
   7,049.46/9,728.33 = 3,905.63/x
3. Step 3: Cross multiply
   7,049.46x = 9,728.33 × 3,905.63
4. Step 4: Simplify right side
   7,049.46x = 37,995,189.33
5. Step 5: Solve for x
   x = 37,995,189.33/7,049.46
6. Step 6: Final answer
   x = 5,389.80