Finding the Fourth Proportional to 23,085.80, 31,861.21 and 13,016.18

Step by Step Solution

1. Step 1: Write the proportion equation
   23,085.80 : 31,861.21 = 13,016.18 : x
2. Step 2: Convert to fraction form
   23,085.80/31,861.21 = 13,016.18/x
3. Step 3: Cross multiply
   23,085.80x = 31,861.21 × 13,016.18
4. Step 4: Simplify right side
   23,085.80x = 414,711,244.38
5. Step 5: Solve for x
   x = 414,711,244.38/23,085.80
6. Step 6: Final answer
   x = 17,963.91