Finding the Fourth Proportional to 22,401.69, 30,914.33 and 12,970.05

Step by Step Solution

1. Step 1: Write the proportion equation
   22,401.69 : 30,914.33 = 12,970.05 : x
2. Step 2: Convert to fraction form
   22,401.69/30,914.33 = 12,970.05/x
3. Step 3: Cross multiply
   22,401.69x = 30,914.33 × 12,970.05
4. Step 4: Simplify right side
   22,401.69x = 400,960,340.97
5. Step 5: Solve for x
   x = 400,960,340.97/22,401.69
6. Step 6: Final answer
   x = 17,898.66