Finding the Fourth Proportional to 21,804.25, 32,707.17 and 7,765.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,804.25 : 32,707.17 = 7,765.31 : x
2. Step 2: Convert to fraction form
   21,804.25/32,707.17 = 7,765.31/x
3. Step 3: Cross multiply
   21,804.25x = 32,707.17 × 7,765.31
4. Step 4: Simplify right side
   21,804.25x = 253,981,314.27
5. Step 5: Solve for x
   x = 253,981,314.27/21,804.25
6. Step 6: Final answer
   x = 11,648.25