Finding the Fourth Proportional to 9,379.41, 12,944.70 and 5,401.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,379.41 : 12,944.70 = 5,401.30 : x
2. Step 2: Convert to fraction form
   9,379.41/12,944.70 = 5,401.30/x
3. Step 3: Cross multiply
   9,379.41x = 12,944.70 × 5,401.30
4. Step 4: Simplify right side
   9,379.41x = 69,918,208.11
5. Step 5: Solve for x
   x = 69,918,208.11/9,379.41
6. Step 6: Final answer
   x = 7,454.44