Finding the Fourth Proportional to 9,860.28, 14,789.61 and 2,934.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,860.28 : 14,789.61 = 2,934.78 : x
2. Step 2: Convert to fraction form
   9,860.28/14,789.61 = 2,934.78/x
3. Step 3: Cross multiply
   9,860.28x = 14,789.61 × 2,934.78
4. Step 4: Simplify right side
   9,860.28x = 43,404,251.64
5. Step 5: Solve for x
   x = 43,404,251.64/9,860.28
6. Step 6: Final answer
   x = 4,401.93