Finding the Fourth Proportional to 23,998.28, 33,117.72 and 13,388.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,998.28 : 33,117.72 = 13,388.72 : x
2. Step 2: Convert to fraction form
   23,998.28/33,117.72 = 13,388.72/x
3. Step 3: Cross multiply
   23,998.28x = 33,117.72 × 13,388.72
4. Step 4: Simplify right side
   23,998.28x = 443,403,880.12
5. Step 5: Solve for x
   x = 443,403,880.12/23,998.28
6. Step 6: Final answer
   x = 18,476.49