Finding the Fourth Proportional to 22,476.43, 31,016.42 and 12,909.59

Step by Step Solution

1. Step 1: Write the proportion equation
   22,476.43 : 31,016.42 = 12,909.59 : x
2. Step 2: Convert to fraction form
   22,476.43/31,016.42 = 12,909.59/x
3. Step 3: Cross multiply
   22,476.43x = 31,016.42 × 12,909.59
4. Step 4: Simplify right side
   22,476.43x = 400,409,265.47
5. Step 5: Solve for x
   x = 400,409,265.47/22,476.43
6. Step 6: Final answer
   x = 17,814.63