Finding the Fourth Proportional to 8,418.23, 12,527.98 and 8,137.93

Step by Step Solution

1. Step 1: Write the proportion equation
   8,418.23 : 12,527.98 = 8,137.93 : x
2. Step 2: Convert to fraction form
   8,418.23/12,527.98 = 8,137.93/x
3. Step 3: Cross multiply
   8,418.23x = 12,527.98 × 8,137.93
4. Step 4: Simplify right side
   8,418.23x = 101,951,783.59
5. Step 5: Solve for x
   x = 101,951,783.59/8,418.23
6. Step 6: Final answer
   x = 12,110.83