Finding the Fourth Proportional to 11,944.91, 16,488.51 and 7,964.57

Step by Step Solution

1. Step 1: Write the proportion equation
   11,944.91 : 16,488.51 = 7,964.57 : x
2. Step 2: Convert to fraction form
   11,944.91/16,488.51 = 7,964.57/x
3. Step 3: Cross multiply
   11,944.91x = 16,488.51 × 7,964.57
4. Step 4: Simplify right side
   11,944.91x = 131,323,892.09
5. Step 5: Solve for x
   x = 131,323,892.09/11,944.91
6. Step 6: Final answer
   x = 10,994.13