Finding the Fourth Proportional to 5,182.12, 7,768.86 and 2,581.48

Step by Step Solution

1. Step 1: Write the proportion equation
   5,182.12 : 7,768.86 = 2,581.48 : x
2. Step 2: Convert to fraction form
   5,182.12/7,768.86 = 2,581.48/x
3. Step 3: Cross multiply
   5,182.12x = 7,768.86 × 2,581.48
4. Step 4: Simplify right side
   5,182.12x = 20,055,156.71
5. Step 5: Solve for x
   x = 20,055,156.71/5,182.12
6. Step 6: Final answer
   x = 3,870.07