Finding the Fourth Proportional to 22,476.46, 31,016.60 and 12,916.84

Step by Step Solution

1. Step 1: Write the proportion equation
   22,476.46 : 31,016.60 = 12,916.84 : x
2. Step 2: Convert to fraction form
   22,476.46/31,016.60 = 12,916.84/x
3. Step 3: Cross multiply
   22,476.46x = 31,016.60 × 12,916.84
4. Step 4: Simplify right side
   22,476.46x = 400,636,459.54
5. Step 5: Solve for x
   x = 400,636,459.54/22,476.46
6. Step 6: Final answer
   x = 17,824.71