Finding the Fourth Proportional to 9,786.29, 14,679.39 and 2,390.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,786.29 : 14,679.39 = 2,390.79 : x
2. Step 2: Convert to fraction form
   9,786.29/14,679.39 = 2,390.79/x
3. Step 3: Cross multiply
   9,786.29x = 14,679.39 × 2,390.79
4. Step 4: Simplify right side
   9,786.29x = 35,095,338.82
5. Step 5: Solve for x
   x = 35,095,338.82/9,786.29
6. Step 6: Final answer
   x = 3,586.17