Finding the Fourth Proportional to 9,128.56, 13,688.52 and 4,506.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,128.56 : 13,688.52 = 4,506.16 : x
2. Step 2: Convert to fraction form
   9,128.56/13,688.52 = 4,506.16/x
3. Step 3: Cross multiply
   9,128.56x = 13,688.52 × 4,506.16
4. Step 4: Simplify right side
   9,128.56x = 61,682,661.28
5. Step 5: Solve for x
   x = 61,682,661.28/9,128.56
6. Step 6: Final answer
   x = 6,757.11