Finding the Fourth Proportional to 12,983.12, 17,904.94 and 8,505.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,983.12 : 17,904.94 = 8,505.24 : x
2. Step 2: Convert to fraction form
   12,983.12/17,904.94 = 8,505.24/x
3. Step 3: Cross multiply
   12,983.12x = 17,904.94 × 8,505.24
4. Step 4: Simplify right side
   12,983.12x = 152,285,811.89
5. Step 5: Solve for x
   x = 152,285,811.89/12,983.12
6. Step 6: Final answer
   x = 11,729.52