Finding the Fourth Proportional to 23,855.91, 32,920.98 and 13,245.57

Step by Step Solution

1. Step 1: Write the proportion equation
   23,855.91 : 32,920.98 = 13,245.57 : x
2. Step 2: Convert to fraction form
   23,855.91/32,920.98 = 13,245.57/x
3. Step 3: Cross multiply
   23,855.91x = 32,920.98 × 13,245.57
4. Step 4: Simplify right side
   23,855.91x = 436,057,145.06
5. Step 5: Solve for x
   x = 436,057,145.06/23,855.91
6. Step 6: Final answer
   x = 18,278.79