Finding the Fourth Proportional to 23,815.42, 32,857.72 and 13,742.53

Step by Step Solution

1. Step 1: Write the proportion equation
   23,815.42 : 32,857.72 = 13,742.53 : x
2. Step 2: Convert to fraction form
   23,815.42/32,857.72 = 13,742.53/x
3. Step 3: Cross multiply
   23,815.42x = 32,857.72 × 13,742.53
4. Step 4: Simplify right side
   23,815.42x = 451,548,086.33
5. Step 5: Solve for x
   x = 451,548,086.33/23,815.42
6. Step 6: Final answer
   x = 18,960.33