Finding the Fourth Proportional to 3,475.47, 4,796.78 and 2,216.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,475.47 : 4,796.78 = 2,216.91 : x
2. Step 2: Convert to fraction form
   3,475.47/4,796.78 = 2,216.91/x
3. Step 3: Cross multiply
   3,475.47x = 4,796.78 × 2,216.91
4. Step 4: Simplify right side
   3,475.47x = 10,633,994.48
5. Step 5: Solve for x
   x = 10,633,994.48/3,475.47
6. Step 6: Final answer
   x = 3,059.73