Finding the Fourth Proportional to 9,315.65, 12,855.84 and 5,066.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,315.65 : 12,855.84 = 5,066.96 : x
2. Step 2: Convert to fraction form
   9,315.65/12,855.84 = 5,066.96/x
3. Step 3: Cross multiply
   9,315.65x = 12,855.84 × 5,066.96
4. Step 4: Simplify right side
   9,315.65x = 65,139,958.02
5. Step 5: Solve for x
   x = 65,139,958.02/9,315.65
6. Step 6: Final answer
   x = 6,992.53