Finding the Fourth Proportional to 23,131.42, 31,918.46 and 13,058.62

Step by Step Solution

1. Step 1: Write the proportion equation
   23,131.42 : 31,918.46 = 13,058.62 : x
2. Step 2: Convert to fraction form
   23,131.42/31,918.46 = 13,058.62/x
3. Step 3: Cross multiply
   23,131.42x = 31,918.46 × 13,058.62
4. Step 4: Simplify right side
   23,131.42x = 416,811,040.13
5. Step 5: Solve for x
   x = 416,811,040.13/23,131.42
6. Step 6: Final answer
   x = 18,019.26