Finding the Fourth Proportional to 21,150.32, 31,745.16 and 10,769.84

Step by Step Solution

1. Step 1: Write the proportion equation
   21,150.32 : 31,745.16 = 10,769.84 : x
2. Step 2: Convert to fraction form
   21,150.32/31,745.16 = 10,769.84/x
3. Step 3: Cross multiply
   21,150.32x = 31,745.16 × 10,769.84
4. Step 4: Simplify right side
   21,150.32x = 341,890,293.97
5. Step 5: Solve for x
   x = 341,890,293.97/21,150.32
6. Step 6: Final answer
   x = 16,164.78