Finding the Fourth Proportional to 11,951.69, 16,493.10 and 6,646.38

Step by Step Solution

1. Step 1: Write the proportion equation
   11,951.69 : 16,493.10 = 6,646.38 : x
2. Step 2: Convert to fraction form
   11,951.69/16,493.10 = 6,646.38/x
3. Step 3: Cross multiply
   11,951.69x = 16,493.10 × 6,646.38
4. Step 4: Simplify right side
   11,951.69x = 109,619,409.98
5. Step 5: Solve for x
   x = 109,619,409.98/11,951.69
6. Step 6: Final answer
   x = 9,171.88