Finding the Fourth Proportional to 9,393.60, 12,966.02 and 5,417.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,393.60 : 12,966.02 = 5,417.31 : x
2. Step 2: Convert to fraction form
   9,393.60/12,966.02 = 5,417.31/x
3. Step 3: Cross multiply
   9,393.60x = 12,966.02 × 5,417.31
4. Step 4: Simplify right side
   9,393.60x = 70,241,022.13
5. Step 5: Solve for x
   x = 70,241,022.13/9,393.60
6. Step 6: Final answer
   x = 7,477.54