Finding the Fourth Proportional to 9,335.34, 12,882.78 and 5,356.35

Step by Step Solution

1. Step 1: Write the proportion equation
   9,335.34 : 12,882.78 = 5,356.35 : x
2. Step 2: Convert to fraction form
   9,335.34/12,882.78 = 5,356.35/x
3. Step 3: Cross multiply
   9,335.34x = 12,882.78 × 5,356.35
4. Step 4: Simplify right side
   9,335.34x = 69,004,678.65
5. Step 5: Solve for x
   x = 69,004,678.65/9,335.34
6. Step 6: Final answer
   x = 7,391.77