Finding the Fourth Proportional to 7,881.39, 10,876.14 and 5,086.89

Step by Step Solution

1. Step 1: Write the proportion equation
   7,881.39 : 10,876.14 = 5,086.89 : x
2. Step 2: Convert to fraction form
   7,881.39/10,876.14 = 5,086.89/x
3. Step 3: Cross multiply
   7,881.39x = 10,876.14 × 5,086.89
4. Step 4: Simplify right side
   7,881.39x = 55,325,727.80
5. Step 5: Solve for x
   x = 55,325,727.80/7,881.39
6. Step 6: Final answer
   x = 7,019.79