Finding the Fourth Proportional to 5,234.80, 7,845.60 and 2,770.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,234.80 : 7,845.60 = 2,770.72 : x
2. Step 2: Convert to fraction form
   5,234.80/7,845.60 = 2,770.72/x
3. Step 3: Cross multiply
   5,234.80x = 7,845.60 × 2,770.72
4. Step 4: Simplify right side
   5,234.80x = 21,737,960.83
5. Step 5: Solve for x
   x = 21,737,960.83/5,234.80
6. Step 6: Final answer
   x = 4,152.59