Finding the Fourth Proportional to 6,490.86, 9,729.34 and 4,636.35

Step by Step Solution

1. Step 1: Write the proportion equation
   6,490.86 : 9,729.34 = 4,636.35 : x
2. Step 2: Convert to fraction form
   6,490.86/9,729.34 = 4,636.35/x
3. Step 3: Cross multiply
   6,490.86x = 9,729.34 × 4,636.35
4. Step 4: Simplify right side
   6,490.86x = 45,108,649.83
5. Step 5: Solve for x
   x = 45,108,649.83/6,490.86
6. Step 6: Final answer
   x = 6,949.56