Finding the Fourth Proportional to 6,398.72, 8,830.32 and 3,604.28

Step by Step Solution

1. Step 1: Write the proportion equation
   6,398.72 : 8,830.32 = 3,604.28 : x
2. Step 2: Convert to fraction form
   6,398.72/8,830.32 = 3,604.28/x
3. Step 3: Cross multiply
   6,398.72x = 8,830.32 × 3,604.28
4. Step 4: Simplify right side
   6,398.72x = 31,826,945.77
5. Step 5: Solve for x
   x = 31,826,945.77/6,398.72
6. Step 6: Final answer
   x = 4,973.96