Finding the Fourth Proportional to 16,661.27, 23,012.03 and 13,119.95

Step by Step Solution

1. Step 1: Write the proportion equation
   16,661.27 : 23,012.03 = 13,119.95 : x
2. Step 2: Convert to fraction form
   16,661.27/23,012.03 = 13,119.95/x
3. Step 3: Cross multiply
   16,661.27x = 23,012.03 × 13,119.95
4. Step 4: Simplify right side
   16,661.27x = 301,916,683.00
5. Step 5: Solve for x
   x = 301,916,683.00/16,661.27
6. Step 6: Final answer
   x = 18,120.87