Finding the Fourth Proportional to 9,427.20, 12,976.86 and 8,150.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,427.20 : 12,976.86 = 8,150.48 : x
2. Step 2: Convert to fraction form
   9,427.20/12,976.86 = 8,150.48/x
3. Step 3: Cross multiply
   9,427.20x = 12,976.86 × 8,150.48
4. Step 4: Simplify right side
   9,427.20x = 105,767,637.89
5. Step 5: Solve for x
   x = 105,767,637.89/9,427.20
6. Step 6: Final answer
   x = 11,219.41