Finding the Fourth Proportional to 23,090.28, 31,864.48 and 13,018.28

Step by Step Solution

1. Step 1: Write the proportion equation
   23,090.28 : 31,864.48 = 13,018.28 : x
2. Step 2: Convert to fraction form
   23,090.28/31,864.48 = 13,018.28/x
3. Step 3: Cross multiply
   23,090.28x = 31,864.48 × 13,018.28
4. Step 4: Simplify right side
   23,090.28x = 414,820,722.69
5. Step 5: Solve for x
   x = 414,820,722.69/23,090.28
6. Step 6: Final answer
   x = 17,965.17