Finding the Fourth Proportional to 12,785.98, 17,644.76 and 7,480.91

Step by Step Solution

1. Step 1: Write the proportion equation
   12,785.98 : 17,644.76 = 7,480.91 : x
2. Step 2: Convert to fraction form
   12,785.98/17,644.76 = 7,480.91/x
3. Step 3: Cross multiply
   12,785.98x = 17,644.76 × 7,480.91
4. Step 4: Simplify right side
   12,785.98x = 131,998,818.08
5. Step 5: Solve for x
   x = 131,998,818.08/12,785.98
6. Step 6: Final answer
   x = 10,323.72