Finding the Fourth Proportional to 6,389.73, 9,563.94 and 3,929.49

Step by Step Solution

1. Step 1: Write the proportion equation
   6,389.73 : 9,563.94 = 3,929.49 : x
2. Step 2: Convert to fraction form
   6,389.73/9,563.94 = 3,929.49/x
3. Step 3: Cross multiply
   6,389.73x = 9,563.94 × 3,929.49
4. Step 4: Simplify right side
   6,389.73x = 37,581,406.59
5. Step 5: Solve for x
   x = 37,581,406.59/6,389.73
6. Step 6: Final answer
   x = 5,881.53