Finding the Fourth Proportional to 9,392.76, 12,965.67 and 5,417.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,392.76 : 12,965.67 = 5,417.28 : x
2. Step 2: Convert to fraction form
   9,392.76/12,965.67 = 5,417.28/x
3. Step 3: Cross multiply
   9,392.76x = 12,965.67 × 5,417.28
4. Step 4: Simplify right side
   9,392.76x = 70,238,664.78
5. Step 5: Solve for x
   x = 70,238,664.78/9,392.76
6. Step 6: Final answer
   x = 7,477.96