Finding the Fourth Proportional to 9,785.78, 14,678.69 and 2,390.24

Step by Step Solution

1. Step 1: Write the proportion equation
   9,785.78 : 14,678.69 = 2,390.24 : x
2. Step 2: Convert to fraction form
   9,785.78/14,678.69 = 2,390.24/x
3. Step 3: Cross multiply
   9,785.78x = 14,678.69 × 2,390.24
4. Step 4: Simplify right side
   9,785.78x = 35,085,616.73
5. Step 5: Solve for x
   x = 35,085,616.73/9,785.78
6. Step 6: Final answer
   x = 3,585.37