Finding the Fourth Proportional to 22,705.29, 31,353.21 and 21,961.71

Step by Step Solution

1. Step 1: Write the proportion equation
   22,705.29 : 31,353.21 = 21,961.71 : x
2. Step 2: Convert to fraction form
   22,705.29/31,353.21 = 21,961.71/x
3. Step 3: Cross multiply
   22,705.29x = 31,353.21 × 21,961.71
4. Step 4: Simplify right side
   22,705.29x = 688,570,105.59
5. Step 5: Solve for x
   x = 688,570,105.59/22,705.29
6. Step 6: Final answer
   x = 30,326.42