Finding the Fourth Proportional to 9,360.43, 12,917.39 and 5,382.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,360.43 : 12,917.39 = 5,382.82 : x
2. Step 2: Convert to fraction form
   9,360.43/12,917.39 = 5,382.82/x
3. Step 3: Cross multiply
   9,360.43x = 12,917.39 × 5,382.82
4. Step 4: Simplify right side
   9,360.43x = 69,531,974.47
5. Step 5: Solve for x
   x = 69,531,974.47/9,360.43
6. Step 6: Final answer
   x = 7,428.29