Finding the Fourth Proportional to 11,697.21, 16,137.33 and 8,162.47

Step by Step Solution

1. Step 1: Write the proportion equation
   11,697.21 : 16,137.33 = 8,162.47 : x
2. Step 2: Convert to fraction form
   11,697.21/16,137.33 = 8,162.47/x
3. Step 3: Cross multiply
   11,697.21x = 16,137.33 × 8,162.47
4. Step 4: Simplify right side
   11,697.21x = 131,720,461.57
5. Step 5: Solve for x
   x = 131,720,461.57/11,697.21
6. Step 6: Final answer
   x = 11,260.84