Finding the Fourth Proportional to 9,359.68, 12,916.56 and 5,168.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,359.68 : 12,916.56 = 5,168.56 : x
2. Step 2: Convert to fraction form
   9,359.68/12,916.56 = 5,168.56/x
3. Step 3: Cross multiply
   9,359.68x = 12,916.56 × 5,168.56
4. Step 4: Simplify right side
   9,359.68x = 66,760,015.35
5. Step 5: Solve for x
   x = 66,760,015.35/9,359.68
6. Step 6: Final answer
   x = 7,132.72