Finding the Fourth Proportional to 5,577.78, 7,697.56 and 3,059.98

Step by Step Solution

1. Step 1: Write the proportion equation
   5,577.78 : 7,697.56 = 3,059.98 : x
2. Step 2: Convert to fraction form
   5,577.78/7,697.56 = 3,059.98/x
3. Step 3: Cross multiply
   5,577.78x = 7,697.56 × 3,059.98
4. Step 4: Simplify right side
   5,577.78x = 23,554,379.65
5. Step 5: Solve for x
   x = 23,554,379.65/5,577.78
6. Step 6: Final answer
   x = 4,222.90