Finding the Fourth Proportional to 23,090.67, 31,863.92 and 13,019.13

Step by Step Solution

1. Step 1: Write the proportion equation
   23,090.67 : 31,863.92 = 13,019.13 : x
2. Step 2: Convert to fraction form
   23,090.67/31,863.92 = 13,019.13/x
3. Step 3: Cross multiply
   23,090.67x = 31,863.92 × 13,019.13
4. Step 4: Simplify right side
   23,090.67x = 414,840,451.69
5. Step 5: Solve for x
   x = 414,840,451.69/23,090.67
6. Step 6: Final answer
   x = 17,965.72