Finding the Fourth Proportional to 12,684.89, 19,022.27 and 5,284.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,684.89 : 19,022.27 = 5,284.32 : x
2. Step 2: Convert to fraction form
   12,684.89/19,022.27 = 5,284.32/x
3. Step 3: Cross multiply
   12,684.89x = 19,022.27 × 5,284.32
4. Step 4: Simplify right side
   12,684.89x = 100,519,735.38
5. Step 5: Solve for x
   x = 100,519,735.38/12,684.89
6. Step 6: Final answer
   x = 7,924.37