Finding the Fourth Proportional to 9,326.39, 12,871.53 and 5,347.49

Step by Step Solution

1. Step 1: Write the proportion equation
   9,326.39 : 12,871.53 = 5,347.49 : x
2. Step 2: Convert to fraction form
   9,326.39/12,871.53 = 5,347.49/x
3. Step 3: Cross multiply
   9,326.39x = 12,871.53 × 5,347.49
4. Step 4: Simplify right side
   9,326.39x = 68,830,286.86
5. Step 5: Solve for x
   x = 68,830,286.86/9,326.39
6. Step 6: Final answer
   x = 7,380.17