Finding the Fourth Proportional to 23,086.80, 31,860.15 and 13,015.73

Step by Step Solution

1. Step 1: Write the proportion equation
   23,086.80 : 31,860.15 = 13,015.73 : x
2. Step 2: Convert to fraction form
   23,086.80/31,860.15 = 13,015.73/x
3. Step 3: Cross multiply
   23,086.80x = 31,860.15 × 13,015.73
4. Step 4: Simplify right side
   23,086.80x = 414,683,110.16
5. Step 5: Solve for x
   x = 414,683,110.16/23,086.80
6. Step 6: Final answer
   x = 17,961.91