Finding the Fourth Proportional to 28,766.28, 39,692.83 and 16,019.31

Step by Step Solution

1. Step 1: Write the proportion equation
   28,766.28 : 39,692.83 = 16,019.31 : x
2. Step 2: Convert to fraction form
   28,766.28/39,692.83 = 16,019.31/x
3. Step 3: Cross multiply
   28,766.28x = 39,692.83 × 16,019.31
4. Step 4: Simplify right side
   28,766.28x = 635,851,748.55
5. Step 5: Solve for x
   x = 635,851,748.55/28,766.28
6. Step 6: Final answer
   x = 22,104.07