Finding the Fourth Proportional to 12,499.16, 18,727.98 and 8,793.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,499.16 : 18,727.98 = 8,793.61 : x
2. Step 2: Convert to fraction form
   12,499.16/18,727.98 = 8,793.61/x
3. Step 3: Cross multiply
   12,499.16x = 18,727.98 × 8,793.61
4. Step 4: Simplify right side
   12,499.16x = 164,686,538.36
5. Step 5: Solve for x
   x = 164,686,538.36/12,499.16
6. Step 6: Final answer
   x = 13,175.81