Finding the Fourth Proportional to 12,832.83, 17,708.78 and 7,167.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,832.83 : 17,708.78 = 7,167.55 : x
2. Step 2: Convert to fraction form
   12,832.83/17,708.78 = 7,167.55/x
3. Step 3: Cross multiply
   12,832.83x = 17,708.78 × 7,167.55
4. Step 4: Simplify right side
   12,832.83x = 126,928,557.53
5. Step 5: Solve for x
   x = 126,928,557.53/12,832.83
6. Step 6: Final answer
   x = 9,890.92