Finding the Fourth Proportional to 23,085.41, 31,860.86 and 13,017

Step by Step Solution

1. Step 1: Write the proportion equation
   23,085.41 : 31,860.86 = 13,017 : x
2. Step 2: Convert to fraction form
   23,085.41/31,860.86 = 13,017/x
3. Step 3: Cross multiply
   23,085.41x = 31,860.86 × 13,017
4. Step 4: Simplify right side
   23,085.41x = 414,732,749.54
5. Step 5: Solve for x
   x = 414,732,749.54/23,085.41
6. Step 6: Final answer
   x = 17,965.15