Finding the Fourth Proportional to 22,705.30, 31,331.37 and 12,633.76

Step by Step Solution

1. Step 1: Write the proportion equation
   22,705.30 : 31,331.37 = 12,633.76 : x
2. Step 2: Convert to fraction form
   22,705.30/31,331.37 = 12,633.76/x
3. Step 3: Cross multiply
   22,705.30x = 31,331.37 × 12,633.76
4. Step 4: Simplify right side
   22,705.30x = 395,833,009.05
5. Step 5: Solve for x
   x = 395,833,009.05/22,705.30
6. Step 6: Final answer
   x = 17,433.51