Finding the Fourth Proportional to 5,086.71, 7,020.31 and 3,097.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,086.71 : 7,020.31 = 3,097.15 : x
2. Step 2: Convert to fraction form
   5,086.71/7,020.31 = 3,097.15/x
3. Step 3: Cross multiply
   5,086.71x = 7,020.31 × 3,097.15
4. Step 4: Simplify right side
   5,086.71x = 21,742,927.82
5. Step 5: Solve for x
   x = 21,742,927.82/5,086.71
6. Step 6: Final answer
   x = 4,274.46