Finding the Fourth Proportional to 22,059.42, 30,442.68 and 12,631.02

Step by Step Solution

1. Step 1: Write the proportion equation
   22,059.42 : 30,442.68 = 12,631.02 : x
2. Step 2: Convert to fraction form
   22,059.42/30,442.68 = 12,631.02/x
3. Step 3: Cross multiply
   22,059.42x = 30,442.68 × 12,631.02
4. Step 4: Simplify right side
   22,059.42x = 384,522,099.93
5. Step 5: Solve for x
   x = 384,522,099.93/22,059.42
6. Step 6: Final answer
   x = 17,431.20