Finding the Fourth Proportional to 21,150.72, 29,176.20 and 19,648.98

Step by Step Solution

1. Step 1: Write the proportion equation
   21,150.72 : 29,176.20 = 19,648.98 : x
2. Step 2: Convert to fraction form
   21,150.72/29,176.20 = 19,648.98/x
3. Step 3: Cross multiply
   21,150.72x = 29,176.20 × 19,648.98
4. Step 4: Simplify right side
   21,150.72x = 573,282,570.28
5. Step 5: Solve for x
   x = 573,282,570.28/21,150.72
6. Step 6: Final answer
   x = 27,104.64