Finding the Fourth Proportional to 9,819.97, 13,551.24 and 5,571.43

Step by Step Solution

1. Step 1: Write the proportion equation
   9,819.97 : 13,551.24 = 5,571.43 : x
2. Step 2: Convert to fraction form
   9,819.97/13,551.24 = 5,571.43/x
3. Step 3: Cross multiply
   9,819.97x = 13,551.24 × 5,571.43
4. Step 4: Simplify right side
   9,819.97x = 75,499,785.07
5. Step 5: Solve for x
   x = 75,499,785.07/9,819.97
6. Step 6: Final answer
   x = 7,688.39