Finding the Fourth Proportional to 16,556.16, 22,855.96 and 12,770.82

Step by Step Solution

1. Step 1: Write the proportion equation
   16,556.16 : 22,855.96 = 12,770.82 : x
2. Step 2: Convert to fraction form
   16,556.16/22,855.96 = 12,770.82/x
3. Step 3: Cross multiply
   16,556.16x = 22,855.96 × 12,770.82
4. Step 4: Simplify right side
   16,556.16x = 291,889,413.37
5. Step 5: Solve for x
   x = 291,889,413.37/16,556.16
6. Step 6: Final answer
   x = 17,630.27