Finding the Fourth Proportional to 9,379.84, 12,944.28 and 5,401.36

Step by Step Solution

1. Step 1: Write the proportion equation
   9,379.84 : 12,944.28 = 5,401.36 : x
2. Step 2: Convert to fraction form
   9,379.84/12,944.28 = 5,401.36/x
3. Step 3: Cross multiply
   9,379.84x = 12,944.28 × 5,401.36
4. Step 4: Simplify right side
   9,379.84x = 69,916,716.22
5. Step 5: Solve for x
   x = 69,916,716.22/9,379.84
6. Step 6: Final answer
   x = 7,453.93