Finding the Fourth Proportional to 23,999.50, 33,119.31 and 13,389.13

Step by Step Solution

1. Step 1: Write the proportion equation
   23,999.50 : 33,119.31 = 13,389.13 : x
2. Step 2: Convert to fraction form
   23,999.50/33,119.31 = 13,389.13/x
3. Step 3: Cross multiply
   23,999.50x = 33,119.31 × 13,389.13
4. Step 4: Simplify right side
   23,999.50x = 443,438,747.10
5. Step 5: Solve for x
   x = 443,438,747.10/23,999.50
6. Step 6: Final answer
   x = 18,477.00