Finding the Fourth Proportional to 12,785.27, 17,639.43 and 7,476.33

Step by Step Solution

1. Step 1: Write the proportion equation
   12,785.27 : 17,639.43 = 7,476.33 : x
2. Step 2: Convert to fraction form
   12,785.27/17,639.43 = 7,476.33/x
3. Step 3: Cross multiply
   12,785.27x = 17,639.43 × 7,476.33
4. Step 4: Simplify right side
   12,785.27x = 131,878,199.69
5. Step 5: Solve for x
   x = 131,878,199.69/12,785.27
6. Step 6: Final answer
   x = 10,314.85