Finding the Fourth Proportional to 23,200.22, 32,016.30 and 13,128.44

Step by Step Solution

1. Step 1: Write the proportion equation
   23,200.22 : 32,016.30 = 13,128.44 : x
2. Step 2: Convert to fraction form
   23,200.22/32,016.30 = 13,128.44/x
3. Step 3: Cross multiply
   23,200.22x = 32,016.30 × 13,128.44
4. Step 4: Simplify right side
   23,200.22x = 420,324,073.57
5. Step 5: Solve for x
   x = 420,324,073.57/23,200.22
6. Step 6: Final answer
   x = 18,117.25