Finding the Fourth Proportional to 12,806.52, 17,673.05 and 7,141.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,806.52 : 17,673.05 = 7,141.60 : x
2. Step 2: Convert to fraction form
   12,806.52/17,673.05 = 7,141.60/x
3. Step 3: Cross multiply
   12,806.52x = 17,673.05 × 7,141.60
4. Step 4: Simplify right side
   12,806.52x = 126,213,853.88
5. Step 5: Solve for x
   x = 126,213,853.88/12,806.52
6. Step 6: Final answer
   x = 9,855.44