Finding the Fourth Proportional to 22,783.91, 31,439.61 and 13,836.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,783.91 : 31,439.61 = 13,836.31 : x
2. Step 2: Convert to fraction form
   22,783.91/31,439.61 = 13,836.31/x
3. Step 3: Cross multiply
   22,783.91x = 31,439.61 × 13,836.31
4. Step 4: Simplify right side
   22,783.91x = 435,008,111.64
5. Step 5: Solve for x
   x = 435,008,111.64/22,783.91
6. Step 6: Final answer
   x = 19,092.78