Finding the Fourth Proportional to 9,158.56, 13,728.56 and 3,609.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,158.56 : 13,728.56 = 3,609.74 : x
2. Step 2: Convert to fraction form
   9,158.56/13,728.56 = 3,609.74/x
3. Step 3: Cross multiply
   9,158.56x = 13,728.56 × 3,609.74
4. Step 4: Simplify right side
   9,158.56x = 49,556,532.17
5. Step 5: Solve for x
   x = 49,556,532.17/9,158.56
6. Step 6: Final answer
   x = 5,410.95