Finding the Fourth Proportional to 9,177.28, 12,664.96 and 5,144.29

Step by Step Solution

1. Step 1: Write the proportion equation
   9,177.28 : 12,664.96 = 5,144.29 : x
2. Step 2: Convert to fraction form
   9,177.28/12,664.96 = 5,144.29/x
3. Step 3: Cross multiply
   9,177.28x = 12,664.96 × 5,144.29
4. Step 4: Simplify right side
   9,177.28x = 65,152,182.56
5. Step 5: Solve for x
   x = 65,152,182.56/9,177.28
6. Step 6: Final answer
   x = 7,099.29