Finding the Fourth Proportional to 12,166.42, 16,789.74 and 7,692.19

Step by Step Solution

1. Step 1: Write the proportion equation
   12,166.42 : 16,789.74 = 7,692.19 : x
2. Step 2: Convert to fraction form
   12,166.42/16,789.74 = 7,692.19/x
3. Step 3: Cross multiply
   12,166.42x = 16,789.74 × 7,692.19
4. Step 4: Simplify right side
   12,166.42x = 129,149,870.13
5. Step 5: Solve for x
   x = 129,149,870.13/12,166.42
6. Step 6: Final answer
   x = 10,615.27