Finding the Fourth Proportional to 9,010.20, 12,426.30 and 8,485.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,010.20 : 12,426.30 = 8,485.32 : x
2. Step 2: Convert to fraction form
   9,010.20/12,426.30 = 8,485.32/x
3. Step 3: Cross multiply
   9,010.20x = 12,426.30 × 8,485.32
4. Step 4: Simplify right side
   9,010.20x = 105,441,131.92
5. Step 5: Solve for x
   x = 105,441,131.92/9,010.20
6. Step 6: Final answer
   x = 11,702.42