Finding the Fourth Proportional to 9,395.28, 12,965.67 and 5,415.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,395.28 : 12,965.67 = 5,415.72 : x
2. Step 2: Convert to fraction form
   9,395.28/12,965.67 = 5,415.72/x
3. Step 3: Cross multiply
   9,395.28x = 12,965.67 × 5,415.72
4. Step 4: Simplify right side
   9,395.28x = 70,218,438.33
5. Step 5: Solve for x
   x = 70,218,438.33/9,395.28
6. Step 6: Final answer
   x = 7,473.80