Finding the Fourth Proportional to 5,240.72, 7,851.86 and 2,770.10

Step by Step Solution

1. Step 1: Write the proportion equation
   5,240.72 : 7,851.86 = 2,770.10 : x
2. Step 2: Convert to fraction form
   5,240.72/7,851.86 = 2,770.10/x
3. Step 3: Cross multiply
   5,240.72x = 7,851.86 × 2,770.10
4. Step 4: Simplify right side
   5,240.72x = 21,750,437.39
5. Step 5: Solve for x
   x = 21,750,437.39/5,240.72
6. Step 6: Final answer
   x = 4,150.28