Finding the Fourth Proportional to 7,105.25, 9,804.69 and 3,918.06

Step by Step Solution

1. Step 1: Write the proportion equation
   7,105.25 : 9,804.69 = 3,918.06 : x
2. Step 2: Convert to fraction form
   7,105.25/9,804.69 = 3,918.06/x
3. Step 3: Cross multiply
   7,105.25x = 9,804.69 × 3,918.06
4. Step 4: Simplify right side
   7,105.25x = 38,415,363.70
5. Step 5: Solve for x
   x = 38,415,363.70/7,105.25
6. Step 6: Final answer
   x = 5,406.62