Finding the Fourth Proportional to 9,334.28, 12,880.86 and 5,356.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,334.28 : 12,880.86 = 5,356.82 : x
2. Step 2: Convert to fraction form
   9,334.28/12,880.86 = 5,356.82/x
3. Step 3: Cross multiply
   9,334.28x = 12,880.86 × 5,356.82
4. Step 4: Simplify right side
   9,334.28x = 69,000,448.47
5. Step 5: Solve for x
   x = 69,000,448.47/9,334.28
6. Step 6: Final answer
   x = 7,392.16