Finding the Fourth Proportional to 8,111.49, 12,175.74 and 5,153.37

Step by Step Solution

1. Step 1: Write the proportion equation
   8,111.49 : 12,175.74 = 5,153.37 : x
2. Step 2: Convert to fraction form
   8,111.49/12,175.74 = 5,153.37/x
3. Step 3: Cross multiply
   8,111.49x = 12,175.74 × 5,153.37
4. Step 4: Simplify right side
   8,111.49x = 62,746,093.24
5. Step 5: Solve for x
   x = 62,746,093.24/8,111.49
6. Step 6: Final answer
   x = 7,735.46