Finding the Fourth Proportional to 9,871.43, 13,622.54 and 5,394.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,871.43 : 13,622.54 = 5,394.89 : x
2. Step 2: Convert to fraction form
   9,871.43/13,622.54 = 5,394.89/x
3. Step 3: Cross multiply
   9,871.43x = 13,622.54 × 5,394.89
4. Step 4: Simplify right side
   9,871.43x = 73,492,009.73
5. Step 5: Solve for x
   x = 73,492,009.73/9,871.43
6. Step 6: Final answer
   x = 7,444.92