Finding the Fourth Proportional to 12,618.52, 17,387.94 and 9,768.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,618.52 : 17,387.94 = 9,768.68 : x
2. Step 2: Convert to fraction form
   12,618.52/17,387.94 = 9,768.68/x
3. Step 3: Cross multiply
   12,618.52x = 17,387.94 × 9,768.68
4. Step 4: Simplify right side
   12,618.52x = 169,857,221.72
5. Step 5: Solve for x
   x = 169,857,221.72/12,618.52
6. Step 6: Final answer
   x = 13,460.95