Finding the Fourth Proportional to 23,998.98, 33,118.71 and 13,389.21

Step by Step Solution

1. Step 1: Write the proportion equation
   23,998.98 : 33,118.71 = 13,389.21 : x
2. Step 2: Convert to fraction form
   23,998.98/33,118.71 = 13,389.21/x
3. Step 3: Cross multiply
   23,998.98x = 33,118.71 × 13,389.21
4. Step 4: Simplify right side
   23,998.98x = 443,433,363.12
5. Step 5: Solve for x
   x = 443,433,363.12/23,998.98
6. Step 6: Final answer
   x = 18,477.18