Finding the Fourth Proportional to 9,379.20, 12,941.28 and 5,653.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,379.20 : 12,941.28 = 5,653.12 : x
2. Step 2: Convert to fraction form
   9,379.20/12,941.28 = 5,653.12/x
3. Step 3: Cross multiply
   9,379.20x = 12,941.28 × 5,653.12
4. Step 4: Simplify right side
   9,379.20x = 73,158,608.79
5. Step 5: Solve for x
   x = 73,158,608.79/9,379.20
6. Step 6: Final answer
   x = 7,800.09