Finding the Fourth Proportional to 12,453.92, 17,162.79 and 8,910.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,453.92 : 17,162.79 = 8,910.98 : x
2. Step 2: Convert to fraction form
   12,453.92/17,162.79 = 8,910.98/x
3. Step 3: Cross multiply
   12,453.92x = 17,162.79 × 8,910.98
4. Step 4: Simplify right side
   12,453.92x = 152,937,278.43
5. Step 5: Solve for x
   x = 152,937,278.43/12,453.92
6. Step 6: Final answer
   x = 12,280.25