Finding the Fourth Proportional to 22,969.88, 31,698.32 and 12,898.48

Step by Step Solution

1. Step 1: Write the proportion equation
   22,969.88 : 31,698.32 = 12,898.48 : x
2. Step 2: Convert to fraction form
   22,969.88/31,698.32 = 12,898.48/x
3. Step 3: Cross multiply
   22,969.88x = 31,698.32 × 12,898.48
4. Step 4: Simplify right side
   22,969.88x = 408,860,146.55
5. Step 5: Solve for x
   x = 408,860,146.55/22,969.88
6. Step 6: Final answer
   x = 17,799.84