Finding the Fourth Proportional to 22,016.53, 30,382.81 and 12,585.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,016.53 : 30,382.81 = 12,585.30 : x
2. Step 2: Convert to fraction form
   22,016.53/30,382.81 = 12,585.30/x
3. Step 3: Cross multiply
   22,016.53x = 30,382.81 × 12,585.30
4. Step 4: Simplify right side
   22,016.53x = 382,376,704.09
5. Step 5: Solve for x
   x = 382,376,704.09/22,016.53
6. Step 6: Final answer
   x = 17,367.71