Finding the Fourth Proportional to 10,906.30, 16,349.73 and 4,328.02

Step by Step Solution

1. Step 1: Write the proportion equation
   10,906.30 : 16,349.73 = 4,328.02 : x
2. Step 2: Convert to fraction form
   10,906.30/16,349.73 = 4,328.02/x
3. Step 3: Cross multiply
   10,906.30x = 16,349.73 × 4,328.02
4. Step 4: Simplify right side
   10,906.30x = 70,761,958.43
5. Step 5: Solve for x
   x = 70,761,958.43/10,906.30
6. Step 6: Final answer
   x = 6,488.17