Finding the Fourth Proportional to 12,189.29, 18,284.00 and 3,424.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,189.29 : 18,284.00 = 3,424.28 : x
2. Step 2: Convert to fraction form
   12,189.29/18,284.00 = 3,424.28/x
3. Step 3: Cross multiply
   12,189.29x = 18,284.00 × 3,424.28
4. Step 4: Simplify right side
   12,189.29x = 62,609,426.98
5. Step 5: Solve for x
   x = 62,609,426.98/12,189.29
6. Step 6: Final answer
   x = 5,136.43