Finding the Fourth Proportional to 8,085.60, 10,760.76 and 8,085.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,085.60 : 10,760.76 = 8,085.60 : x
2. Step 2: Convert to fraction form
   8,085.60/10,760.76 = 8,085.60/x
3. Step 3: Cross multiply
   8,085.60x = 10,760.76 × 8,085.60
4. Step 4: Simplify right side
   8,085.60x = 87,007,201.06
5. Step 5: Solve for x
   x = 87,007,201.06/8,085.60
6. Step 6: Final answer
   x = 10,760.76