Finding the Fourth Proportional to 23,869.28, 32,940.78 and 13,258.69

Step by Step Solution

1. Step 1: Write the proportion equation
   23,869.28 : 32,940.78 = 13,258.69 : x
2. Step 2: Convert to fraction form
   23,869.28/32,940.78 = 13,258.69/x
3. Step 3: Cross multiply
   23,869.28x = 32,940.78 × 13,258.69
4. Step 4: Simplify right side
   23,869.28x = 436,751,458.31
5. Step 5: Solve for x
   x = 436,751,458.31/23,869.28
6. Step 6: Final answer
   x = 18,297.64