Finding the Fourth Proportional to 7,766.89, 10,773.22 and 7,486.68

Step by Step Solution

1. Step 1: Write the proportion equation
   7,766.89 : 10,773.22 = 7,486.68 : x
2. Step 2: Convert to fraction form
   7,766.89/10,773.22 = 7,486.68/x
3. Step 3: Cross multiply
   7,766.89x = 10,773.22 × 7,486.68
4. Step 4: Simplify right side
   7,766.89x = 80,655,594.25
5. Step 5: Solve for x
   x = 80,655,594.25/7,766.89
6. Step 6: Final answer
   x = 10,384.55