Finding the Fourth Proportional to 11,956.86, 16,500.42 and 6,651.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,956.86 : 16,500.42 = 6,651.72 : x
2. Step 2: Convert to fraction form
   11,956.86/16,500.42 = 6,651.72/x
3. Step 3: Cross multiply
   11,956.86x = 16,500.42 × 6,651.72
4. Step 4: Simplify right side
   11,956.86x = 109,756,173.72
5. Step 5: Solve for x
   x = 109,756,173.72/11,956.86
6. Step 6: Final answer
   x = 9,179.35