Finding the Fourth Proportional to 10,933.80, 16,386.20 and 4,356.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,933.80 : 16,386.20 = 4,356.38 : x
2. Step 2: Convert to fraction form
   10,933.80/16,386.20 = 4,356.38/x
3. Step 3: Cross multiply
   10,933.80x = 16,386.20 × 4,356.38
4. Step 4: Simplify right side
   10,933.80x = 71,384,513.96
5. Step 5: Solve for x
   x = 71,384,513.96/10,933.80
6. Step 6: Final answer
   x = 6,528.79