Finding the Fourth Proportional to 9,225.12, 12,735.78 and 6,086.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,225.12 : 12,735.78 = 6,086.72 : x
2. Step 2: Convert to fraction form
   9,225.12/12,735.78 = 6,086.72/x
3. Step 3: Cross multiply
   9,225.12x = 12,735.78 × 6,086.72
4. Step 4: Simplify right side
   9,225.12x = 77,519,126.84
5. Step 5: Solve for x
   x = 77,519,126.84/9,225.12
6. Step 6: Final answer
   x = 8,403.05