Finding the Fourth Proportional to 11,987.97, 16,538.52 and 7,956.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11,987.97 : 16,538.52 = 7,956.69 : x
2. Step 2: Convert to fraction form
   11,987.97/16,538.52 = 7,956.69/x
3. Step 3: Cross multiply
   11,987.97x = 16,538.52 × 7,956.69
4. Step 4: Simplify right side
   11,987.97x = 131,591,876.70
5. Step 5: Solve for x
   x = 131,591,876.70/11,987.97
6. Step 6: Final answer
   x = 10,976.99