Finding the Fourth Proportional to 7,767.27, 10,646.25 and 7,486.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,767.27 : 10,646.25 = 7,486.72 : x
2. Step 2: Convert to fraction form
   7,767.27/10,646.25 = 7,486.72/x
3. Step 3: Cross multiply
   7,767.27x = 10,646.25 × 7,486.72
4. Step 4: Simplify right side
   7,767.27x = 79,705,433.67
5. Step 5: Solve for x
   x = 79,705,433.67/7,767.27
6. Step 6: Final answer
   x = 10,261.71