Finding the Fourth Proportional to 5,380.50, 7,422.84 and 3,885.14

Step by Step Solution

1. Step 1: Write the proportion equation
   5,380.50 : 7,422.84 = 3,885.14 : x
2. Step 2: Convert to fraction form
   5,380.50/7,422.84 = 3,885.14/x
3. Step 3: Cross multiply
   5,380.50x = 7,422.84 × 3,885.14
4. Step 4: Simplify right side
   5,380.50x = 28,838,791.15
5. Step 5: Solve for x
   x = 28,838,791.15/5,380.50
6. Step 6: Final answer
   x = 5,359.87