Finding the Fourth Proportional to 10,065.41, 13,903.35 and 7,660.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,065.41 : 13,903.35 = 7,660.78 : x
2. Step 2: Convert to fraction form
   10,065.41/13,903.35 = 7,660.78/x
3. Step 3: Cross multiply
   10,065.41x = 13,903.35 × 7,660.78
4. Step 4: Simplify right side
   10,065.41x = 106,510,470.85
5. Step 5: Solve for x
   x = 106,510,470.85/10,065.41
6. Step 6: Final answer
   x = 10,581.83