Finding the Fourth Proportional to 8,109.09, 12,133.26 and 5,774.49

Step by Step Solution

1. Step 1: Write the proportion equation
   8,109.09 : 12,133.26 = 5,774.49 : x
2. Step 2: Convert to fraction form
   8,109.09/12,133.26 = 5,774.49/x
3. Step 3: Cross multiply
   8,109.09x = 12,133.26 × 5,774.49
4. Step 4: Simplify right side
   8,109.09x = 70,063,388.54
5. Step 5: Solve for x
   x = 70,063,388.54/8,109.09
6. Step 6: Final answer
   x = 8,640.10