Finding the Fourth Proportional to 12,628.56, 18,945.58 and 4,837.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,628.56 : 18,945.58 = 4,837.38 : x
2. Step 2: Convert to fraction form
   12,628.56/18,945.58 = 4,837.38/x
3. Step 3: Cross multiply
   12,628.56x = 18,945.58 × 4,837.38
4. Step 4: Simplify right side
   12,628.56x = 91,646,969.78
5. Step 5: Solve for x
   x = 91,646,969.78/12,628.56
6. Step 6: Final answer
   x = 7,257.12