Finding the Fourth Proportional to 23,987.36, 33,100.99 and 13,231.59

Step by Step Solution

1. Step 1: Write the proportion equation
   23,987.36 : 33,100.99 = 13,231.59 : x
2. Step 2: Convert to fraction form
   23,987.36/33,100.99 = 13,231.59/x
3. Step 3: Cross multiply
   23,987.36x = 33,100.99 × 13,231.59
4. Step 4: Simplify right side
   23,987.36x = 437,978,529.69
5. Step 5: Solve for x
   x = 437,978,529.69/23,987.36
6. Step 6: Final answer
   x = 18,258.72