Finding the Fourth Proportional to 9,354, 12,908.56 and 5,162.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,354 : 12,908.56 = 5,162.16 : x
2. Step 2: Convert to fraction form
   9,354/12,908.56 = 5,162.16/x
3. Step 3: Cross multiply
   9,354x = 12,908.56 × 5,162.16
4. Step 4: Simplify right side
   9,354x = 66,636,052.09
5. Step 5: Solve for x
   x = 66,636,052.09/9,354
6. Step 6: Final answer
   x = 7,123.80