Finding the Fourth Proportional to 9,871.75, 13,622.59 and 5,395.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,871.75 : 13,622.59 = 5,395.69 : x
2. Step 2: Convert to fraction form
   9,871.75/13,622.59 = 5,395.69/x
3. Step 3: Cross multiply
   9,871.75x = 13,622.59 × 5,395.69
4. Step 4: Simplify right side
   9,871.75x = 73,503,272.64
5. Step 5: Solve for x
   x = 73,503,272.64/9,871.75
6. Step 6: Final answer
   x = 7,445.82