Finding the Fourth Proportional to 11,665.01, 16,105.64 and 8,971.46

Step by Step Solution

1. Step 1: Write the proportion equation
   11,665.01 : 16,105.64 = 8,971.46 : x
2. Step 2: Convert to fraction form
   11,665.01/16,105.64 = 8,971.46/x
3. Step 3: Cross multiply
   11,665.01x = 16,105.64 × 8,971.46
4. Step 4: Simplify right side
   11,665.01x = 144,491,040.05
5. Step 5: Solve for x
   x = 144,491,040.05/11,665.01
6. Step 6: Final answer
   x = 12,386.70