Finding the Fourth Proportional to 7,413.47, 10,228.91 and 4,428.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,413.47 : 10,228.91 = 4,428.72 : x
2. Step 2: Convert to fraction form
   7,413.47/10,228.91 = 4,428.72/x
3. Step 3: Cross multiply
   7,413.47x = 10,228.91 × 4,428.72
4. Step 4: Simplify right side
   7,413.47x = 45,300,978.30
5. Step 5: Solve for x
   x = 45,300,978.30/7,413.47
6. Step 6: Final answer
   x = 6,110.63