Finding the Fourth Proportional to 9,821.82, 13,551.79 and 5,571.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,821.82 : 13,551.79 = 5,571.94 : x
2. Step 2: Convert to fraction form
   9,821.82/13,551.79 = 5,571.94/x
3. Step 3: Cross multiply
   9,821.82x = 13,551.79 × 5,571.94
4. Step 4: Simplify right side
   9,821.82x = 75,509,760.77
5. Step 5: Solve for x
   x = 75,509,760.77/9,821.82
6. Step 6: Final answer
   x = 7,687.96