Finding the Fourth Proportional to 9,871.57, 13,622.73 and 5,395.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,871.57 : 13,622.73 = 5,395.32 : x
2. Step 2: Convert to fraction form
   9,871.57/13,622.73 = 5,395.32/x
3. Step 3: Cross multiply
   9,871.57x = 13,622.73 × 5,395.32
4. Step 4: Simplify right side
   9,871.57x = 73,499,016.90
5. Step 5: Solve for x
   x = 73,499,016.90/9,871.57
6. Step 6: Final answer
   x = 7,445.52