Finding the Fourth Proportional to 22,059.54, 30,431.57 and 12,622.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,059.54 : 30,431.57 = 12,622.50 : x
2. Step 2: Convert to fraction form
   22,059.54/30,431.57 = 12,622.50/x
3. Step 3: Cross multiply
   22,059.54x = 30,431.57 × 12,622.50
4. Step 4: Simplify right side
   22,059.54x = 384,122,429.21
5. Step 5: Solve for x
   x = 384,122,429.21/22,059.54
6. Step 6: Final answer
   x = 17,412.98