Finding the Fourth Proportional to 12,696.37, 17,525.69 and 7,660.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,696.37 : 17,525.69 = 7,660.80 : x
2. Step 2: Convert to fraction form
   12,696.37/17,525.69 = 7,660.80/x
3. Step 3: Cross multiply
   12,696.37x = 17,525.69 × 7,660.80
4. Step 4: Simplify right side
   12,696.37x = 134,260,796.38
5. Step 5: Solve for x
   x = 134,260,796.38/12,696.37
6. Step 6: Final answer
   x = 10,574.74