Finding the Fourth Proportional to 19,300.25, 28,998.78 and 12,283.29

Step by Step Solution

1. Step 1: Write the proportion equation
   19,300.25 : 28,998.78 = 12,283.29 : x
2. Step 2: Convert to fraction form
   19,300.25/28,998.78 = 12,283.29/x
3. Step 3: Cross multiply
   19,300.25x = 28,998.78 × 12,283.29
4. Step 4: Simplify right side
   19,300.25x = 356,200,424.39
5. Step 5: Solve for x
   x = 356,200,424.39/19,300.25
6. Step 6: Final answer
   x = 18,455.74