Finding the Fourth Proportional to 17,238.40, 23,788.56 and 9,786.40

Step by Step Solution

1. Step 1: Write the proportion equation
   17,238.40 : 23,788.56 = 9,786.40 : x
2. Step 2: Convert to fraction form
   17,238.40/23,788.56 = 9,786.40/x
3. Step 3: Cross multiply
   17,238.40x = 23,788.56 × 9,786.40
4. Step 4: Simplify right side
   17,238.40x = 232,804,363.58
5. Step 5: Solve for x
   x = 232,804,363.58/17,238.40
6. Step 6: Final answer
   x = 13,504.99