Finding the Fourth Proportional to 22,969.96, 31,698.16 and 12,898.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,969.96 : 31,698.16 = 12,898.42 : x
2. Step 2: Convert to fraction form
   22,969.96/31,698.16 = 12,898.42/x
3. Step 3: Cross multiply
   22,969.96x = 31,698.16 × 12,898.42
4. Step 4: Simplify right side
   22,969.96x = 408,856,069.42
5. Step 5: Solve for x
   x = 408,856,069.42/22,969.96
6. Step 6: Final answer
   x = 17,799.60