Finding the Fourth Proportional to 11,892.92, 16,405.62 and 9,365.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,892.92 : 16,405.62 = 9,365.72 : x
2. Step 2: Convert to fraction form
   11,892.92/16,405.62 = 9,365.72/x
3. Step 3: Cross multiply
   11,892.92x = 16,405.62 × 9,365.72
4. Step 4: Simplify right side
   11,892.92x = 153,650,443.35
5. Step 5: Solve for x
   x = 153,650,443.35/11,892.92
6. Step 6: Final answer
   x = 12,919.49