Finding the Fourth Proportional to 22,789.59, 31,434.10 and 19,800.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,789.59 : 31,434.10 = 19,800.15 : x
2. Step 2: Convert to fraction form
   22,789.59/31,434.10 = 19,800.15/x
3. Step 3: Cross multiply
   22,789.59x = 31,434.10 × 19,800.15
4. Step 4: Simplify right side
   22,789.59x = 622,399,895.12
5. Step 5: Solve for x
   x = 622,399,895.12/22,789.59
6. Step 6: Final answer
   x = 27,310.71