Finding the Fourth Proportional to 22,622.89, 31,219.68 and 12,551.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,622.89 : 31,219.68 = 12,551.31 : x
2. Step 2: Convert to fraction form
   22,622.89/31,219.68 = 12,551.31/x
3. Step 3: Cross multiply
   22,622.89x = 31,219.68 × 12,551.31
4. Step 4: Simplify right side
   22,622.89x = 391,847,881.78
5. Step 5: Solve for x
   x = 391,847,881.78/22,622.89
6. Step 6: Final answer
   x = 17,320.86