Finding the Fourth Proportional to 9,379.60, 12,948.24 and 5,399.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,379.60 : 12,948.24 = 5,399.92 : x
2. Step 2: Convert to fraction form
   9,379.60/12,948.24 = 5,399.92/x
3. Step 3: Cross multiply
   9,379.60x = 12,948.24 × 5,399.92
4. Step 4: Simplify right side
   9,379.60x = 69,919,460.14
5. Step 5: Solve for x
   x = 69,919,460.14/9,379.60
6. Step 6: Final answer
   x = 7,454.42