Finding the Fourth Proportional to 24,002.72, 33,120.46 and 13,390.30

Step by Step Solution

1. Step 1: Write the proportion equation
   24,002.72 : 33,120.46 = 13,390.30 : x
2. Step 2: Convert to fraction form
   24,002.72/33,120.46 = 13,390.30/x
3. Step 3: Cross multiply
   24,002.72x = 33,120.46 × 13,390.30
4. Step 4: Simplify right side
   24,002.72x = 443,492,895.54
5. Step 5: Solve for x
   x = 443,492,895.54/24,002.72
6. Step 6: Final answer
   x = 18,476.78