Finding the Fourth Proportional to 9,382.47, 12,947.81 and 5,403.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,382.47 : 12,947.81 = 5,403.50 : x
2. Step 2: Convert to fraction form
   9,382.47/12,947.81 = 5,403.50/x
3. Step 3: Cross multiply
   9,382.47x = 12,947.81 × 5,403.50
4. Step 4: Simplify right side
   9,382.47x = 69,963,491.34
5. Step 5: Solve for x
   x = 69,963,491.34/9,382.47
6. Step 6: Final answer
   x = 7,456.83