Finding the Fourth Proportional to 23,990.32, 33,107.16 and 13,381

Step by Step Solution

1. Step 1: Write the proportion equation
   23,990.32 : 33,107.16 = 13,381 : x
2. Step 2: Convert to fraction form
   23,990.32/33,107.16 = 13,381/x
3. Step 3: Cross multiply
   23,990.32x = 33,107.16 × 13,381
4. Step 4: Simplify right side
   23,990.32x = 443,006,907.96
5. Step 5: Solve for x
   x = 443,006,907.96/23,990.32
6. Step 6: Final answer
   x = 18,466.07