Finding the Fourth Proportional to 21,692.21, 32,550.56 and 10,005.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,692.21 : 32,550.56 = 10,005.42 : x
2. Step 2: Convert to fraction form
   21,692.21/32,550.56 = 10,005.42/x
3. Step 3: Cross multiply
   21,692.21x = 32,550.56 × 10,005.42
4. Step 4: Simplify right side
   21,692.21x = 325,682,133.59
5. Step 5: Solve for x
   x = 325,682,133.59/21,692.21
6. Step 6: Final answer
   x = 15,013.79