Finding the Fourth Proportional to 12,804.06, 17,670.76 and 7,769.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,804.06 : 17,670.76 = 7,769.56 : x
2. Step 2: Convert to fraction form
   12,804.06/17,670.76 = 7,769.56/x
3. Step 3: Cross multiply
   12,804.06x = 17,670.76 × 7,769.56
4. Step 4: Simplify right side
   12,804.06x = 137,293,977.04
5. Step 5: Solve for x
   x = 137,293,977.04/12,804.06
6. Step 6: Final answer
   x = 10,722.69