Finding the Fourth Proportional to 7,109.22, 9,810.59 and 3,922.81

Step by Step Solution

1. Step 1: Write the proportion equation
   7,109.22 : 9,810.59 = 3,922.81 : x
2. Step 2: Convert to fraction form
   7,109.22/9,810.59 = 3,922.81/x
3. Step 3: Cross multiply
   7,109.22x = 9,810.59 × 3,922.81
4. Step 4: Simplify right side
   7,109.22x = 38,485,080.56
5. Step 5: Solve for x
   x = 38,485,080.56/7,109.22
6. Step 6: Final answer
   x = 5,413.40