Finding the Fourth Proportional to 5,314.91, 7,335.83 and 3,218.63

Step by Step Solution

1. Step 1: Write the proportion equation
   5,314.91 : 7,335.83 = 3,218.63 : x
2. Step 2: Convert to fraction form
   5,314.91/7,335.83 = 3,218.63/x
3. Step 3: Cross multiply
   5,314.91x = 7,335.83 × 3,218.63
4. Step 4: Simplify right side
   5,314.91x = 23,611,293.88
5. Step 5: Solve for x
   x = 23,611,293.88/5,314.91
6. Step 6: Final answer
   x = 4,442.47