Finding the Fourth Proportional to 5,395.50, 7,442.31 and 3,820.86

Step by Step Solution

1. Step 1: Write the proportion equation
   5,395.50 : 7,442.31 = 3,820.86 : x
2. Step 2: Convert to fraction form
   5,395.50/7,442.31 = 3,820.86/x
3. Step 3: Cross multiply
   5,395.50x = 7,442.31 × 3,820.86
4. Step 4: Simplify right side
   5,395.50x = 28,436,024.59
5. Step 5: Solve for x
   x = 28,436,024.59/5,395.50
6. Step 6: Final answer
   x = 5,270.32