Finding the Fourth Proportional to 21,730.43, 32,610.26 and 7,690.41

Step by Step Solution

1. Step 1: Write the proportion equation
   21,730.43 : 32,610.26 = 7,690.41 : x
2. Step 2: Convert to fraction form
   21,730.43/32,610.26 = 7,690.41/x
3. Step 3: Cross multiply
   21,730.43x = 32,610.26 × 7,690.41
4. Step 4: Simplify right side
   21,730.43x = 250,786,288.83
5. Step 5: Solve for x
   x = 250,786,288.83/21,730.43
6. Step 6: Final answer
   x = 11,540.79