Finding the Fourth Proportional to 37,692.72, 52,012.08 and 21,782.28

Step by Step Solution

1. Step 1: Write the proportion equation
   37,692.72 : 52,012.08 = 21,782.28 : x
2. Step 2: Convert to fraction form
   37,692.72/52,012.08 = 21,782.28/x
3. Step 3: Cross multiply
   37,692.72x = 52,012.08 × 21,782.28
4. Step 4: Simplify right side
   37,692.72x = 1,132,941,689.94
5. Step 5: Solve for x
   x = 1,132,941,689.94/37,692.72
6. Step 6: Final answer
   x = 30,057.31