Finding the Fourth Proportional to 21,766.37, 32,653.33 and 7,912.13

Step by Step Solution

1. Step 1: Write the proportion equation
   21,766.37 : 32,653.33 = 7,912.13 : x
2. Step 2: Convert to fraction form
   21,766.37/32,653.33 = 7,912.13/x
3. Step 3: Cross multiply
   21,766.37x = 32,653.33 × 7,912.13
4. Step 4: Simplify right side
   21,766.37x = 258,357,208.85
5. Step 5: Solve for x
   x = 258,357,208.85/21,766.37
6. Step 6: Final answer
   x = 11,869.56