Finding the Fourth Proportional to 12,387.96, 17,083.94 and 11,493.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,387.96 : 17,083.94 = 11,493.72 : x
2. Step 2: Convert to fraction form
   12,387.96/17,083.94 = 11,493.72/x
3. Step 3: Cross multiply
   12,387.96x = 17,083.94 × 11,493.72
4. Step 4: Simplify right side
   12,387.96x = 196,358,022.86
5. Step 5: Solve for x
   x = 196,358,022.86/12,387.96
6. Step 6: Final answer
   x = 15,850.71