Finding the Fourth Proportional to 9,143.16, 12,617.56 and 5,164.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,143.16 : 12,617.56 = 5,164.54 : x
2. Step 2: Convert to fraction form
   9,143.16/12,617.56 = 5,164.54/x
3. Step 3: Cross multiply
   9,143.16x = 12,617.56 × 5,164.54
4. Step 4: Simplify right side
   9,143.16x = 65,163,893.32
5. Step 5: Solve for x
   x = 65,163,893.32/9,143.16
6. Step 6: Final answer
   x = 7,127.06