Finding the Fourth Proportional to 5,147.82, 7,718.81 and 1,637.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,147.82 : 7,718.81 = 1,637.15 : x
2. Step 2: Convert to fraction form
   5,147.82/7,718.81 = 1,637.15/x
3. Step 3: Cross multiply
   5,147.82x = 7,718.81 × 1,637.15
4. Step 4: Simplify right side
   5,147.82x = 12,636,803.01
5. Step 5: Solve for x
   x = 12,636,803.01/5,147.82
6. Step 6: Final answer
   x = 2,454.79