Finding the Fourth Proportional to 12,788.96, 17,647.50 and 9,433.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,788.96 : 17,647.50 = 9,433.58 : x
2. Step 2: Convert to fraction form
   12,788.96/17,647.50 = 9,433.58/x
3. Step 3: Cross multiply
   12,788.96x = 17,647.50 × 9,433.58
4. Step 4: Simplify right side
   12,788.96x = 166,479,103.05
5. Step 5: Solve for x
   x = 166,479,103.05/12,788.96
6. Step 6: Final answer
   x = 13,017.41