Finding the Fourth Proportional to 8,399.18, 12,594.56 and 4,890.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,399.18 : 12,594.56 = 4,890.34 : x
2. Step 2: Convert to fraction form
   8,399.18/12,594.56 = 4,890.34/x
3. Step 3: Cross multiply
   8,399.18x = 12,594.56 × 4,890.34
4. Step 4: Simplify right side
   8,399.18x = 61,591,680.55
5. Step 5: Solve for x
   x = 61,591,680.55/8,399.18
6. Step 6: Final answer
   x = 7,333.06