Finding the Fourth Proportional to 5,370.82, 8,011.62 and 5,281.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,370.82 : 8,011.62 = 5,281.72 : x
2. Step 2: Convert to fraction form
   5,370.82/8,011.62 = 5,281.72/x
3. Step 3: Cross multiply
   5,370.82x = 8,011.62 × 5,281.72
4. Step 4: Simplify right side
   5,370.82x = 42,315,133.59
5. Step 5: Solve for x
   x = 42,315,133.59/5,370.82
6. Step 6: Final answer
   x = 7,878.71