Finding the Fourth Proportional to 15,766.42, 21,758.64 and 8,692.83

Step by Step Solution

1. Step 1: Write the proportion equation
   15,766.42 : 21,758.64 = 8,692.83 : x
2. Step 2: Convert to fraction form
   15,766.42/21,758.64 = 8,692.83/x
3. Step 3: Cross multiply
   15,766.42x = 21,758.64 × 8,692.83
4. Step 4: Simplify right side
   15,766.42x = 189,144,158.55
5. Step 5: Solve for x
   x = 189,144,158.55/15,766.42
6. Step 6: Final answer
   x = 11,996.65