Finding the Fourth Proportional to 9,327.21, 12,870.77 and 5,347.41

Step by Step Solution

1. Step 1: Write the proportion equation
   9,327.21 : 12,870.77 = 5,347.41 : x
2. Step 2: Convert to fraction form
   9,327.21/12,870.77 = 5,347.41/x
3. Step 3: Cross multiply
   9,327.21x = 12,870.77 × 5,347.41
4. Step 4: Simplify right side
   9,327.21x = 68,825,257.47
5. Step 5: Solve for x
   x = 68,825,257.47/9,327.21
6. Step 6: Final answer
   x = 7,378.98