Finding the Fourth Proportional to 9,347.12, 12,900.42 and 5,993.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,347.12 : 12,900.42 = 5,993.72 : x
2. Step 2: Convert to fraction form
   9,347.12/12,900.42 = 5,993.72/x
3. Step 3: Cross multiply
   9,347.12x = 12,900.42 × 5,993.72
4. Step 4: Simplify right side
   9,347.12x = 77,321,425.88
5. Step 5: Solve for x
   x = 77,321,425.88/9,347.12
6. Step 6: Final answer
   x = 8,272.22