Finding the Fourth Proportional to 9,789.57, 14,686.79 and 3,950.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,789.57 : 14,686.79 = 3,950.28 : x
2. Step 2: Convert to fraction form
   9,789.57/14,686.79 = 3,950.28/x
3. Step 3: Cross multiply
   9,789.57x = 14,686.79 × 3,950.28
4. Step 4: Simplify right side
   9,789.57x = 58,016,913.05
5. Step 5: Solve for x
   x = 58,016,913.05/9,789.57
6. Step 6: Final answer
   x = 5,926.40