Finding the Fourth Proportional to 21,561.93, 32,323.73 and 8,411.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,561.93 : 32,323.73 = 8,411.31 : x
2. Step 2: Convert to fraction form
   21,561.93/32,323.73 = 8,411.31/x
3. Step 3: Cross multiply
   21,561.93x = 32,323.73 × 8,411.31
4. Step 4: Simplify right side
   21,561.93x = 271,884,871.33
5. Step 5: Solve for x
   x = 271,884,871.33/21,561.93
6. Step 6: Final answer
   x = 12,609.49