Finding the Fourth Proportional to 21,273.28, 31,907.49 and 5,692.12

Step by Step Solution

1. Step 1: Write the proportion equation
   21,273.28 : 31,907.49 = 5,692.12 : x
2. Step 2: Convert to fraction form
   21,273.28/31,907.49 = 5,692.12/x
3. Step 3: Cross multiply
   21,273.28x = 31,907.49 × 5,692.12
4. Step 4: Simplify right side
   21,273.28x = 181,621,160.86
5. Step 5: Solve for x
   x = 181,621,160.86/21,273.28
6. Step 6: Final answer
   x = 8,537.53