Finding the Fourth Proportional to 22,900.59, 34,350.62 and 12,906.09

Step by Step Solution

1. Step 1: Write the proportion equation
   22,900.59 : 34,350.62 = 12,906.09 : x
2. Step 2: Convert to fraction form
   22,900.59/34,350.62 = 12,906.09/x
3. Step 3: Cross multiply
   22,900.59x = 34,350.62 × 12,906.09
4. Step 4: Simplify right side
   22,900.59x = 443,332,128.75
5. Step 5: Solve for x
   x = 443,332,128.75/22,900.59
6. Step 6: Final answer
   x = 19,358.98