Finding the Fourth Proportional to 5,945.78, 8,197.72 and 3,817.55

Step by Step Solution

1. Step 1: Write the proportion equation
   5,945.78 : 8,197.72 = 3,817.55 : x
2. Step 2: Convert to fraction form
   5,945.78/8,197.72 = 3,817.55/x
3. Step 3: Cross multiply
   5,945.78x = 8,197.72 × 3,817.55
4. Step 4: Simplify right side
   5,945.78x = 31,295,216.94
5. Step 5: Solve for x
   x = 31,295,216.94/5,945.78
6. Step 6: Final answer
   x = 5,263.43