Finding the Fourth Proportional to 22,485.16, 31,028.16 and 13,535.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,485.16 : 31,028.16 = 13,535.56 : x
2. Step 2: Convert to fraction form
   22,485.16/31,028.16 = 13,535.56/x
3. Step 3: Cross multiply
   22,485.16x = 31,028.16 × 13,535.56
4. Step 4: Simplify right side
   22,485.16x = 419,983,521.37
5. Step 5: Solve for x
   x = 419,983,521.37/22,485.16
6. Step 6: Final answer
   x = 18,678.25