Finding the Fourth Proportional to 12,311.37, 17,003.84 and 8,969.13

Step by Step Solution

1. Step 1: Write the proportion equation
   12,311.37 : 17,003.84 = 8,969.13 : x
2. Step 2: Convert to fraction form
   12,311.37/17,003.84 = 8,969.13/x
3. Step 3: Cross multiply
   12,311.37x = 17,003.84 × 8,969.13
4. Step 4: Simplify right side
   12,311.37x = 152,509,651.46
5. Step 5: Solve for x
   x = 152,509,651.46/12,311.37
6. Step 6: Final answer
   x = 12,387.71