Finding the Fourth Proportional to 13,488.89, 20,233.30 and 3,628.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,488.89 : 20,233.30 = 3,628.18 : x
2. Step 2: Convert to fraction form
   13,488.89/20,233.30 = 3,628.18/x
3. Step 3: Cross multiply
   13,488.89x = 20,233.30 × 3,628.18
4. Step 4: Simplify right side
   13,488.89x = 73,410,054.39
5. Step 5: Solve for x
   x = 73,410,054.39/13,488.89
6. Step 6: Final answer
   x = 5,442.26