Finding the Fourth Proportional to 12,003.06, 18,010.62 and 8,099.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,003.06 : 18,010.62 = 8,099.28 : x
2. Step 2: Convert to fraction form
   12,003.06/18,010.62 = 8,099.28/x
3. Step 3: Cross multiply
   12,003.06x = 18,010.62 × 8,099.28
4. Step 4: Simplify right side
   12,003.06x = 145,873,054.35
5. Step 5: Solve for x
   x = 145,873,054.35/12,003.06
6. Step 6: Final answer
   x = 12,152.99