Finding the Fourth Proportional to 9,333.61, 12,879.96 and 5,354.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,333.61 : 12,879.96 = 5,354.47 : x
2. Step 2: Convert to fraction form
   9,333.61/12,879.96 = 5,354.47/x
3. Step 3: Cross multiply
   9,333.61x = 12,879.96 × 5,354.47
4. Step 4: Simplify right side
   9,333.61x = 68,965,359.42
5. Step 5: Solve for x
   x = 68,965,359.42/9,333.61
6. Step 6: Final answer
   x = 7,388.93