Finding the Fourth Proportional to 9,415.27, 12,989.18 and 5,433.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,415.27 : 12,989.18 = 5,433.56 : x
2. Step 2: Convert to fraction form
   9,415.27/12,989.18 = 5,433.56/x
3. Step 3: Cross multiply
   9,415.27x = 12,989.18 × 5,433.56
4. Step 4: Simplify right side
   9,415.27x = 70,577,488.88
5. Step 5: Solve for x
   x = 70,577,488.88/9,415.27
6. Step 6: Final answer
   x = 7,496.07