Finding the Fourth Proportional to 31,284.84, 46,921.59 and 12,564.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,284.84 : 46,921.59 = 12,564.12 : x
2. Step 2: Convert to fraction form
   31,284.84/46,921.59 = 12,564.12/x
3. Step 3: Cross multiply
   31,284.84x = 46,921.59 × 12,564.12
4. Step 4: Simplify right side
   31,284.84x = 589,528,487.35
5. Step 5: Solve for x
   x = 589,528,487.35/31,284.84
6. Step 6: Final answer
   x = 18,843.90