Finding the Fourth Proportional to 11,670.72, 16,092.72 and 10,165.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,670.72 : 16,092.72 = 10,165.20 : x
2. Step 2: Convert to fraction form
   11,670.72/16,092.72 = 10,165.20/x
3. Step 3: Cross multiply
   11,670.72x = 16,092.72 × 10,165.20
4. Step 4: Simplify right side
   11,670.72x = 163,585,717.34
5. Step 5: Solve for x
   x = 163,585,717.34/11,670.72
6. Step 6: Final answer
   x = 14,016.76