Finding the Fourth Proportional to 23,826.30, 32,877.81 and 13,215.66

Step by Step Solution

1. Step 1: Write the proportion equation
   23,826.30 : 32,877.81 = 13,215.66 : x
2. Step 2: Convert to fraction form
   23,826.30/32,877.81 = 13,215.66/x
3. Step 3: Cross multiply
   23,826.30x = 32,877.81 × 13,215.66
4. Step 4: Simplify right side
   23,826.30x = 434,501,958.50
5. Step 5: Solve for x
   x = 434,501,958.50/23,826.30
6. Step 6: Final answer
   x = 18,236.23