Finding the Fourth Proportional to 31,284, 43,171.92 and 18,036

Step by Step Solution

1. Step 1: Write the proportion equation
   31,284 : 43,171.92 = 18,036 : x
2. Step 2: Convert to fraction form
   31,284/43,171.92 = 18,036/x
3. Step 3: Cross multiply
   31,284x = 43,171.92 × 18,036
4. Step 4: Simplify right side
   31,284x = 778,648,749.12
5. Step 5: Solve for x
   x = 778,648,749.12/31,284
6. Step 6: Final answer
   x = 24,889.68