Finding the Fourth Proportional to 23,899.20, 35,853.59 and 13,384.18

Step by Step Solution

1. Step 1: Write the proportion equation
   23,899.20 : 35,853.59 = 13,384.18 : x
2. Step 2: Convert to fraction form
   23,899.20/35,853.59 = 13,384.18/x
3. Step 3: Cross multiply
   23,899.20x = 35,853.59 × 13,384.18
4. Step 4: Simplify right side
   23,899.20x = 479,870,902.21
5. Step 5: Solve for x
   x = 479,870,902.21/23,899.20
6. Step 6: Final answer
   x = 20,078.95