Finding the Fourth Proportional to 9,105.48, 13,653.90 and 5,208.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,105.48 : 13,653.90 = 5,208.84 : x
2. Step 2: Convert to fraction form
   9,105.48/13,653.90 = 5,208.84/x
3. Step 3: Cross multiply
   9,105.48x = 13,653.90 × 5,208.84
4. Step 4: Simplify right side
   9,105.48x = 71,120,980.48
5. Step 5: Solve for x
   x = 71,120,980.48/9,105.48
6. Step 6: Final answer
   x = 7,810.79