Finding the Fourth Proportional to 5,570.94, 7,687.90 and 3,086.94

Step by Step Solution

1. Step 1: Write the proportion equation
   5,570.94 : 7,687.90 = 3,086.94 : x
2. Step 2: Convert to fraction form
   5,570.94/7,687.90 = 3,086.94/x
3. Step 3: Cross multiply
   5,570.94x = 7,687.90 × 3,086.94
4. Step 4: Simplify right side
   5,570.94x = 23,732,086.03
5. Step 5: Solve for x
   x = 23,732,086.03/5,570.94
6. Step 6: Final answer
   x = 4,259.98