Finding the Fourth Proportional to 5,180.98, 7,765.62 and 4,765.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,180.98 : 7,765.62 = 4,765.72 : x
2. Step 2: Convert to fraction form
   5,180.98/7,765.62 = 4,765.72/x
3. Step 3: Cross multiply
   5,180.98x = 7,765.62 × 4,765.72
4. Step 4: Simplify right side
   5,180.98x = 37,008,770.55
5. Step 5: Solve for x
   x = 37,008,770.55/5,180.98
6. Step 6: Final answer
   x = 7,143.20