Finding the Fourth Proportional to 9,719.82, 13,413.30 and 5,528.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,719.82 : 13,413.30 = 5,528.10 : x
2. Step 2: Convert to fraction form
   9,719.82/13,413.30 = 5,528.10/x
3. Step 3: Cross multiply
   9,719.82x = 13,413.30 × 5,528.10
4. Step 4: Simplify right side
   9,719.82x = 74,150,063.73
5. Step 5: Solve for x
   x = 74,150,063.73/9,719.82
6. Step 6: Final answer
   x = 7,628.75