Finding the Fourth Proportional to 9,383.40, 12,943.32 and 5,603.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,383.40 : 12,943.32 = 5,603.94 : x
2. Step 2: Convert to fraction form
   9,383.40/12,943.32 = 5,603.94/x
3. Step 3: Cross multiply
   9,383.40x = 12,943.32 × 5,603.94
4. Step 4: Simplify right side
   9,383.40x = 72,533,588.68
5. Step 5: Solve for x
   x = 72,533,588.68/9,383.40
6. Step 6: Final answer
   x = 7,729.99