Finding the Fourth Proportional to 9,366.30, 12,899.25 and 9,162.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,366.30 : 12,899.25 = 9,162.18 : x
2. Step 2: Convert to fraction form
   9,366.30/12,899.25 = 9,162.18/x
3. Step 3: Cross multiply
   9,366.30x = 12,899.25 × 9,162.18
4. Step 4: Simplify right side
   9,366.30x = 118,185,250.37
5. Step 5: Solve for x
   x = 118,185,250.37/9,366.30
6. Step 6: Final answer
   x = 12,618.14