Finding the Fourth Proportional to 31,284, 46,933.56 and 12,816

Step by Step Solution

1. Step 1: Write the proportion equation
   31,284 : 46,933.56 = 12,816 : x
2. Step 2: Convert to fraction form
   31,284/46,933.56 = 12,816/x
3. Step 3: Cross multiply
   31,284x = 46,933.56 × 12,816
4. Step 4: Simplify right side
   31,284x = 601,500,504.96
5. Step 5: Solve for x
   x = 601,500,504.96/31,284
6. Step 6: Final answer
   x = 19,227.10