Finding the Fourth Proportional to 23,426.24, 32,327.79 and 12,815.78

Step by Step Solution

1. Step 1: Write the proportion equation
   23,426.24 : 32,327.79 = 12,815.78 : x
2. Step 2: Convert to fraction form
   23,426.24/32,327.79 = 12,815.78/x
3. Step 3: Cross multiply
   23,426.24x = 32,327.79 × 12,815.78
4. Step 4: Simplify right side
   23,426.24x = 414,305,844.53
5. Step 5: Solve for x
   x = 414,305,844.53/23,426.24
6. Step 6: Final answer
   x = 17,685.55