Finding the Fourth Proportional to 9,871.82, 13,622.71 and 5,395.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,871.82 : 13,622.71 = 5,395.72 : x
2. Step 2: Convert to fraction form
   9,871.82/13,622.71 = 5,395.72/x
3. Step 3: Cross multiply
   9,871.82x = 13,622.71 × 5,395.72
4. Step 4: Simplify right side
   9,871.82x = 73,504,328.80
5. Step 5: Solve for x
   x = 73,504,328.80/9,871.82
6. Step 6: Final answer
   x = 7,445.87