Finding the Fourth Proportional to 23,990.68, 33,108.78 and 13,380.22

Step by Step Solution

1. Step 1: Write the proportion equation
   23,990.68 : 33,108.78 = 13,380.22 : x
2. Step 2: Convert to fraction form
   23,990.68/33,108.78 = 13,380.22/x
3. Step 3: Cross multiply
   23,990.68x = 33,108.78 × 13,380.22
4. Step 4: Simplify right side
   23,990.68x = 443,002,760.33
5. Step 5: Solve for x
   x = 443,002,760.33/23,990.68
6. Step 6: Final answer
   x = 18,465.62