Finding the Fourth Proportional to 9,395.39, 12,965.61 and 5,416.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,395.39 : 12,965.61 = 5,416.47 : x
2. Step 2: Convert to fraction form
   9,395.39/12,965.61 = 5,416.47/x
3. Step 3: Cross multiply
   9,395.39x = 12,965.61 × 5,416.47
4. Step 4: Simplify right side
   9,395.39x = 70,227,857.91
5. Step 5: Solve for x
   x = 70,227,857.91/9,395.39
6. Step 6: Final answer
   x = 7,474.71