Finding the Fourth Proportional to 6,741.12, 10,105.52 and 5,707.78

Step by Step Solution

1. Step 1: Write the proportion equation
   6,741.12 : 10,105.52 = 5,707.78 : x
2. Step 2: Convert to fraction form
   6,741.12/10,105.52 = 5,707.78/x
3. Step 3: Cross multiply
   6,741.12x = 10,105.52 × 5,707.78
4. Step 4: Simplify right side
   6,741.12x = 57,680,084.95
5. Step 5: Solve for x
   x = 57,680,084.95/6,741.12
6. Step 6: Final answer
   x = 8,556.45