Finding the Fourth Proportional to 12,409.29, 17,118.41 and 7,685.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,409.29 : 17,118.41 = 7,685.37 : x
2. Step 2: Convert to fraction form
   12,409.29/17,118.41 = 7,685.37/x
3. Step 3: Cross multiply
   12,409.29x = 17,118.41 × 7,685.37
4. Step 4: Simplify right side
   12,409.29x = 131,561,276.23
5. Step 5: Solve for x
   x = 131,561,276.23/12,409.29
6. Step 6: Final answer
   x = 10,601.84