Finding the Fourth Proportional to 5,287.68, 7,977.69 and 5,273.10

Step by Step Solution

1. Step 1: Write the proportion equation
   5,287.68 : 7,977.69 = 5,273.10 : x
2. Step 2: Convert to fraction form
   5,287.68/7,977.69 = 5,273.10/x
3. Step 3: Cross multiply
   5,287.68x = 7,977.69 × 5,273.10
4. Step 4: Simplify right side
   5,287.68x = 42,067,157.14
5. Step 5: Solve for x
   x = 42,067,157.14/5,287.68
6. Step 6: Final answer
   x = 7,955.69