Finding the Fourth Proportional to 13,035.16, 18,003.31 and 8,778.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13,035.16 : 18,003.31 = 8,778.83 : x
2. Step 2: Convert to fraction form
   13,035.16/18,003.31 = 8,778.83/x
3. Step 3: Cross multiply
   13,035.16x = 18,003.31 × 8,778.83
4. Step 4: Simplify right side
   13,035.16x = 158,047,997.93
5. Step 5: Solve for x
   x = 158,047,997.93/13,035.16
6. Step 6: Final answer
   x = 12,124.75