Finding the Fourth Proportional to 9,162.06, 12,631.68 and 9,038.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,162.06 : 12,631.68 = 9,038.12 : x
2. Step 2: Convert to fraction form
   9,162.06/12,631.68 = 9,038.12/x
3. Step 3: Cross multiply
   9,162.06x = 12,631.68 × 9,038.12
4. Step 4: Simplify right side
   9,162.06x = 114,166,639.64
5. Step 5: Solve for x
   x = 114,166,639.64/9,162.06
6. Step 6: Final answer
   x = 12,460.80