Finding the Fourth Proportional to 4,216.61, 5,818.89 and 2,328.31

Step by Step Solution

1. Step 1: Write the proportion equation
   4,216.61 : 5,818.89 = 2,328.31 : x
2. Step 2: Convert to fraction form
   4,216.61/5,818.89 = 2,328.31/x
3. Step 3: Cross multiply
   4,216.61x = 5,818.89 × 2,328.31
4. Step 4: Simplify right side
   4,216.61x = 13,548,159.41
5. Step 5: Solve for x
   x = 13,548,159.41/4,216.61
6. Step 6: Final answer
   x = 3,213.05