Finding the Fourth Proportional to 5,086.59, 7,019.40 and 2,817.87

Step by Step Solution

1. Step 1: Write the proportion equation
   5,086.59 : 7,019.40 = 2,817.87 : x
2. Step 2: Convert to fraction form
   5,086.59/7,019.40 = 2,817.87/x
3. Step 3: Cross multiply
   5,086.59x = 7,019.40 × 2,817.87
4. Step 4: Simplify right side
   5,086.59x = 19,779,742.59
5. Step 5: Solve for x
   x = 19,779,742.59/5,086.59
6. Step 6: Final answer
   x = 3,888.61