Finding the Fourth Proportional to 23,688.24, 32,690.50 and 13,618.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,688.24 : 32,690.50 = 13,618.72 : x
2. Step 2: Convert to fraction form
   23,688.24/32,690.50 = 13,618.72/x
3. Step 3: Cross multiply
   23,688.24x = 32,690.50 × 13,618.72
4. Step 4: Simplify right side
   23,688.24x = 445,202,766.16
5. Step 5: Solve for x
   x = 445,202,766.16/23,688.24
6. Step 6: Final answer
   x = 18,794.25