Finding the Fourth Proportional to 10,806.30, 14,905.98 and 8,284.32

Step by Step Solution

1. Step 1: Write the proportion equation
   10,806.30 : 14,905.98 = 8,284.32 : x
2. Step 2: Convert to fraction form
   10,806.30/14,905.98 = 8,284.32/x
3. Step 3: Cross multiply
   10,806.30x = 14,905.98 × 8,284.32
4. Step 4: Simplify right side
   10,806.30x = 123,485,908.23
5. Step 5: Solve for x
   x = 123,485,908.23/10,806.30
6. Step 6: Final answer
   x = 11,427.21