Finding the Fourth Proportional to 22,429.35, 30,948.89 and 12,996.09

Step by Step Solution

1. Step 1: Write the proportion equation
   22,429.35 : 30,948.89 = 12,996.09 : x
2. Step 2: Convert to fraction form
   22,429.35/30,948.89 = 12,996.09/x
3. Step 3: Cross multiply
   22,429.35x = 30,948.89 × 12,996.09
4. Step 4: Simplify right side
   22,429.35x = 402,214,494.86
5. Step 5: Solve for x
   x = 402,214,494.86/22,429.35
6. Step 6: Final answer
   x = 17,932.51