Finding the Fourth Proportional to 21,834.82, 30,132.16 and 12,760.71

Step by Step Solution

1. Step 1: Write the proportion equation
   21,834.82 : 30,132.16 = 12,760.71 : x
2. Step 2: Convert to fraction form
   21,834.82/30,132.16 = 12,760.71/x
3. Step 3: Cross multiply
   21,834.82x = 30,132.16 × 12,760.71
4. Step 4: Simplify right side
   21,834.82x = 384,507,755.43
5. Step 5: Solve for x
   x = 384,507,755.43/21,834.82
6. Step 6: Final answer
   x = 17,609.84