Finding the Fourth Proportional to 12,740.94, 17,588.43 and 8,499.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,740.94 : 17,588.43 = 8,499.06 : x
2. Step 2: Convert to fraction form
   12,740.94/17,588.43 = 8,499.06/x
3. Step 3: Cross multiply
   12,740.94x = 17,588.43 × 8,499.06
4. Step 4: Simplify right side
   12,740.94x = 149,485,121.88
5. Step 5: Solve for x
   x = 149,485,121.88/12,740.94
6. Step 6: Final answer
   x = 11,732.66