Finding the Fourth Proportional to 3,891.30, 5,369.00 and 2,634.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,891.30 : 5,369.00 = 2,634.72 : x
2. Step 2: Convert to fraction form
   3,891.30/5,369.00 = 2,634.72/x
3. Step 3: Cross multiply
   3,891.30x = 5,369.00 × 2,634.72
4. Step 4: Simplify right side
   3,891.30x = 14,145,798.51
5. Step 5: Solve for x
   x = 14,145,798.51/3,891.30
6. Step 6: Final answer
   x = 3,635.24