Finding the Fourth Proportional to 11,965.38, 16,505.82 and 7,981.36

Step by Step Solution

1. Step 1: Write the proportion equation
   11,965.38 : 16,505.82 = 7,981.36 : x
2. Step 2: Convert to fraction form
   11,965.38/16,505.82 = 7,981.36/x
3. Step 3: Cross multiply
   11,965.38x = 16,505.82 × 7,981.36
4. Step 4: Simplify right side
   11,965.38x = 131,738,891.52
5. Step 5: Solve for x
   x = 131,738,891.52/11,965.38
6. Step 6: Final answer
   x = 11,010.00