Finding the Fourth Proportional to 3,761.28, 5,186.76 and 2,500.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,761.28 : 5,186.76 = 2,500.72 : x
2. Step 2: Convert to fraction form
   3,761.28/5,186.76 = 2,500.72/x
3. Step 3: Cross multiply
   3,761.28x = 5,186.76 × 2,500.72
4. Step 4: Simplify right side
   3,761.28x = 12,970,634.47
5. Step 5: Solve for x
   x = 12,970,634.47/3,761.28
6. Step 6: Final answer
   x = 3,448.46