Finding the Fourth Proportional to 9,828.42, 13,563.39 and 5,579.37

Step by Step Solution

1. Step 1: Write the proportion equation
   9,828.42 : 13,563.39 = 5,579.37 : x
2. Step 2: Convert to fraction form
   9,828.42/13,563.39 = 5,579.37/x
3. Step 3: Cross multiply
   9,828.42x = 13,563.39 × 5,579.37
4. Step 4: Simplify right side
   9,828.42x = 75,675,171.26
5. Step 5: Solve for x
   x = 75,675,171.26/9,828.42
6. Step 6: Final answer
   x = 7,699.63