Finding the Fourth Proportional to 10,355.30, 15,433.03 and 10,338.83

Step by Step Solution

1. Step 1: Write the proportion equation
   10,355.30 : 15,433.03 = 10,338.83 : x
2. Step 2: Convert to fraction form
   10,355.30/15,433.03 = 10,338.83/x
3. Step 3: Cross multiply
   10,355.30x = 15,433.03 × 10,338.83
4. Step 4: Simplify right side
   10,355.30x = 159,559,370.54
5. Step 5: Solve for x
   x = 159,559,370.54/10,355.30
6. Step 6: Final answer
   x = 15,408.48