Finding the Fourth Proportional to 12,328.81, 17,009.59 and 7,019.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,328.81 : 17,009.59 = 7,019.88 : x
2. Step 2: Convert to fraction form
   12,328.81/17,009.59 = 7,019.88/x
3. Step 3: Cross multiply
   12,328.81x = 17,009.59 × 7,019.88
4. Step 4: Simplify right side
   12,328.81x = 119,405,280.65
5. Step 5: Solve for x
   x = 119,405,280.65/12,328.81
6. Step 6: Final answer
   x = 9,685.06