Finding the Fourth Proportional to 22,426.89, 30,947.31 and 12,996.06

Step by Step Solution

1. Step 1: Write the proportion equation
   22,426.89 : 30,947.31 = 12,996.06 : x
2. Step 2: Convert to fraction form
   22,426.89/30,947.31 = 12,996.06/x
3. Step 3: Cross multiply
   22,426.89x = 30,947.31 × 12,996.06
4. Step 4: Simplify right side
   22,426.89x = 402,193,097.60
5. Step 5: Solve for x
   x = 402,193,097.60/22,426.89
6. Step 6: Final answer
   x = 17,933.52