Finding the Fourth Proportional to 23,990.91, 33,109.11 and 13,380.54

Step by Step Solution

1. Step 1: Write the proportion equation
   23,990.91 : 33,109.11 = 13,380.54 : x
2. Step 2: Convert to fraction form
   23,990.91/33,109.11 = 13,380.54/x
3. Step 3: Cross multiply
   23,990.91x = 33,109.11 × 13,380.54
4. Step 4: Simplify right side
   23,990.91x = 443,017,770.72
5. Step 5: Solve for x
   x = 443,017,770.72/23,990.91
6. Step 6: Final answer
   x = 18,466.07