Finding the Fourth Proportional to 5,334.08, 7,989.57 and 3,870

Step by Step Solution

1. Step 1: Write the proportion equation
   5,334.08 : 7,989.57 = 3,870 : x
2. Step 2: Convert to fraction form
   5,334.08/7,989.57 = 3,870/x
3. Step 3: Cross multiply
   5,334.08x = 7,989.57 × 3,870
4. Step 4: Simplify right side
   5,334.08x = 30,919,635.90
5. Step 5: Solve for x
   x = 30,919,635.90/5,334.08
6. Step 6: Final answer
   x = 5,796.63