Finding the Fourth Proportional to 9,402.36, 12,976.14 and 5,424.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,402.36 : 12,976.14 = 5,424.12 : x
2. Step 2: Convert to fraction form
   9,402.36/12,976.14 = 5,424.12/x
3. Step 3: Cross multiply
   9,402.36x = 12,976.14 × 5,424.12
4. Step 4: Simplify right side
   9,402.36x = 70,384,140.50
5. Step 5: Solve for x
   x = 70,384,140.50/9,402.36
6. Step 6: Final answer
   x = 7,485.80