Finding the Fourth Proportional to 11,711.89, 16,162.18 and 6,406.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11,711.89 : 16,162.18 = 6,406.69 : x
2. Step 2: Convert to fraction form
   11,711.89/16,162.18 = 6,406.69/x
3. Step 3: Cross multiply
   11,711.89x = 16,162.18 × 6,406.69
4. Step 4: Simplify right side
   11,711.89x = 103,546,076.98
5. Step 5: Solve for x
   x = 103,546,076.98/11,711.89
6. Step 6: Final answer
   x = 8,841.11