Finding the Fourth Proportional to 9,379.09, 12,944.26 and 5,400.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,379.09 : 12,944.26 = 5,400.98 : x
2. Step 2: Convert to fraction form
   9,379.09/12,944.26 = 5,400.98/x
3. Step 3: Cross multiply
   9,379.09x = 12,944.26 × 5,400.98
4. Step 4: Simplify right side
   9,379.09x = 69,911,611.15
5. Step 5: Solve for x
   x = 69,911,611.15/9,379.09
6. Step 6: Final answer
   x = 7,453.99