Finding the Fourth Proportional to 9,871.11, 13,622.04 and 5,394.83

Step by Step Solution

1. Step 1: Write the proportion equation
   9,871.11 : 13,622.04 = 5,394.83 : x
2. Step 2: Convert to fraction form
   9,871.11/13,622.04 = 5,394.83/x
3. Step 3: Cross multiply
   9,871.11x = 13,622.04 × 5,394.83
4. Step 4: Simplify right side
   9,871.11x = 73,488,521.94
5. Step 5: Solve for x
   x = 73,488,521.94/9,871.11
6. Step 6: Final answer
   x = 7,444.81