Finding the Fourth Proportional to 23,826.40, 32,878.09 and 13,215.82

Step by Step Solution

1. Step 1: Write the proportion equation
   23,826.40 : 32,878.09 = 13,215.82 : x
2. Step 2: Convert to fraction form
   23,826.40/32,878.09 = 13,215.82/x
3. Step 3: Cross multiply
   23,826.40x = 32,878.09 × 13,215.82
4. Step 4: Simplify right side
   23,826.40x = 434,510,919.38
5. Step 5: Solve for x
   x = 434,510,919.38/23,826.40
6. Step 6: Final answer
   x = 18,236.53