Finding the Fourth Proportional to 12,769.34, 17,621.52 and 7,180.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,769.34 : 17,621.52 = 7,180.34 : x
2. Step 2: Convert to fraction form
   12,769.34/17,621.52 = 7,180.34/x
3. Step 3: Cross multiply
   12,769.34x = 17,621.52 × 7,180.34
4. Step 4: Simplify right side
   12,769.34x = 126,528,504.92
5. Step 5: Solve for x
   x = 126,528,504.92/12,769.34
6. Step 6: Final answer
   x = 9,908.77