Finding the Fourth Proportional to 23,998, 33,117.28 and 13,388.30

Step by Step Solution

1. Step 1: Write the proportion equation
   23,998 : 33,117.28 = 13,388.30 : x
2. Step 2: Convert to fraction form
   23,998/33,117.28 = 13,388.30/x
3. Step 3: Cross multiply
   23,998x = 33,117.28 × 13,388.30
4. Step 4: Simplify right side
   23,998x = 443,384,079.82
5. Step 5: Solve for x
   x = 443,384,079.82/23,998
6. Step 6: Final answer
   x = 18,475.88