Finding the Fourth Proportional to 20,141.52, 27,912.72 and 19,859.52

Step by Step Solution

1. Step 1: Write the proportion equation
   20,141.52 : 27,912.72 = 19,859.52 : x
2. Step 2: Convert to fraction form
   20,141.52/27,912.72 = 19,859.52/x
3. Step 3: Cross multiply
   20,141.52x = 27,912.72 × 19,859.52
4. Step 4: Simplify right side
   20,141.52x = 554,333,221.09
5. Step 5: Solve for x
   x = 554,333,221.09/20,141.52
6. Step 6: Final answer
   x = 27,521.92