Finding the Fourth Proportional to 12,609.83, 18,895.23 and 8,662.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,609.83 : 18,895.23 = 8,662.98 : x
2. Step 2: Convert to fraction form
   12,609.83/18,895.23 = 8,662.98/x
3. Step 3: Cross multiply
   12,609.83x = 18,895.23 × 8,662.98
4. Step 4: Simplify right side
   12,609.83x = 163,688,999.59
5. Step 5: Solve for x
   x = 163,688,999.59/12,609.83
6. Step 6: Final answer
   x = 12,981.06