Finding the Fourth Proportional to 20,187, 30,308.34 and 13,932.18

Step by Step Solution

1. Step 1: Write the proportion equation
   20,187 : 30,308.34 = 13,932.18 : x
2. Step 2: Convert to fraction form
   20,187/30,308.34 = 13,932.18/x
3. Step 3: Cross multiply
   20,187x = 30,308.34 × 13,932.18
4. Step 4: Simplify right side
   20,187x = 422,261,248.38
5. Step 5: Solve for x
   x = 422,261,248.38/20,187
6. Step 6: Final answer
   x = 20,917.48