Finding the Fourth Proportional to 22,821.82, 31,490.44 and 12,749.74

Step by Step Solution

1. Step 1: Write the proportion equation
   22,821.82 : 31,490.44 = 12,749.74 : x
2. Step 2: Convert to fraction form
   22,821.82/31,490.44 = 12,749.74/x
3. Step 3: Cross multiply
   22,821.82x = 31,490.44 × 12,749.74
4. Step 4: Simplify right side
   22,821.82x = 401,494,811.89
5. Step 5: Solve for x
   x = 401,494,811.89/22,821.82
6. Step 6: Final answer
   x = 17,592.59