Finding the Fourth Proportional to 12,387.96, 18,552.78 and 9,773.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,387.96 : 18,552.78 = 9,773.28 : x
2. Step 2: Convert to fraction form
   12,387.96/18,552.78 = 9,773.28/x
3. Step 3: Cross multiply
   12,387.96x = 18,552.78 × 9,773.28
4. Step 4: Simplify right side
   12,387.96x = 181,321,513.72
5. Step 5: Solve for x
   x = 181,321,513.72/12,387.96
6. Step 6: Final answer
   x = 14,636.91