Finding the Fourth Proportional to 9,720.30, 13,413.87 and 5,471.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,720.30 : 13,413.87 = 5,471.04 : x
2. Step 2: Convert to fraction form
   9,720.30/13,413.87 = 5,471.04/x
3. Step 3: Cross multiply
   9,720.30x = 13,413.87 × 5,471.04
4. Step 4: Simplify right side
   9,720.30x = 73,387,819.32
5. Step 5: Solve for x
   x = 73,387,819.32/9,720.30
6. Step 6: Final answer
   x = 7,549.95