Finding the Fourth Proportional to 12,785.59, 17,644.08 and 7,479.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,785.59 : 17,644.08 = 7,479.37 : x
2. Step 2: Convert to fraction form
   12,785.59/17,644.08 = 7,479.37/x
3. Step 3: Cross multiply
   12,785.59x = 17,644.08 × 7,479.37
4. Step 4: Simplify right side
   12,785.59x = 131,966,514.41
5. Step 5: Solve for x
   x = 131,966,514.41/12,785.59
6. Step 6: Final answer
   x = 10,321.51