Finding the Fourth Proportional to 23,447.20, 32,357.16 and 13,238.32

Step by Step Solution

1. Step 1: Write the proportion equation
   23,447.20 : 32,357.16 = 13,238.32 : x
2. Step 2: Convert to fraction form
   23,447.20/32,357.16 = 13,238.32/x
3. Step 3: Cross multiply
   23,447.20x = 32,357.16 × 13,238.32
4. Step 4: Simplify right side
   23,447.20x = 428,354,438.37
5. Step 5: Solve for x
   x = 428,354,438.37/23,447.20
6. Step 6: Final answer
   x = 18,268.90