Finding the Fourth Proportional to 22,650.78, 31,253.04 and 13,698.09

Step by Step Solution

1. Step 1: Write the proportion equation
   22,650.78 : 31,253.04 = 13,698.09 : x
2. Step 2: Convert to fraction form
   22,650.78/31,253.04 = 13,698.09/x
3. Step 3: Cross multiply
   22,650.78x = 31,253.04 × 13,698.09
4. Step 4: Simplify right side
   22,650.78x = 428,106,954.69
5. Step 5: Solve for x
   x = 428,106,954.69/22,650.78
6. Step 6: Final answer
   x = 18,900.32