Finding the Fourth Proportional to 22,885.91, 31,581.01 and 12,812.64

Step by Step Solution

1. Step 1: Write the proportion equation
   22,885.91 : 31,581.01 = 12,812.64 : x
2. Step 2: Convert to fraction form
   22,885.91/31,581.01 = 12,812.64/x
3. Step 3: Cross multiply
   22,885.91x = 31,581.01 × 12,812.64
4. Step 4: Simplify right side
   22,885.91x = 404,636,111.97
5. Step 5: Solve for x
   x = 404,636,111.97/22,885.91
6. Step 6: Final answer
   x = 17,680.58