Finding the Fourth Proportional to 22,889.08, 31,584.32 and 12,816.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,889.08 : 31,584.32 = 12,816.12 : x
2. Step 2: Convert to fraction form
   22,889.08/31,584.32 = 12,816.12/x
3. Step 3: Cross multiply
   22,889.08x = 31,584.32 × 12,816.12
4. Step 4: Simplify right side
   22,889.08x = 404,788,435.24
5. Step 5: Solve for x
   x = 404,788,435.24/22,889.08
6. Step 6: Final answer
   x = 17,684.78