Finding the Fourth Proportional to 21,164.22, 29,194.83 and 19,662.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,164.22 : 29,194.83 = 19,662.48 : x
2. Step 2: Convert to fraction form
   21,164.22/29,194.83 = 19,662.48/x
3. Step 3: Cross multiply
   21,164.22x = 29,194.83 × 19,662.48
4. Step 4: Simplify right side
   21,164.22x = 574,042,760.98
5. Step 5: Solve for x
   x = 574,042,760.98/21,164.22
6. Step 6: Final answer
   x = 27,123.27