Finding the Fourth Proportional to 5,422.77, 8,081.82 and 5,313.42

Step by Step Solution

1. Step 1: Write the proportion equation
   5,422.77 : 8,081.82 = 5,313.42 : x
2. Step 2: Convert to fraction form
   5,422.77/8,081.82 = 5,313.42/x
3. Step 3: Cross multiply
   5,422.77x = 8,081.82 × 5,313.42
4. Step 4: Simplify right side
   5,422.77x = 42,942,104.02
5. Step 5: Solve for x
   x = 42,942,104.02/5,422.77
6. Step 6: Final answer
   x = 7,918.85