Finding the Fourth Proportional to 10,827.63, 14,919.93 and 8,309.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,827.63 : 14,919.93 = 8,309.61 : x
2. Step 2: Convert to fraction form
   10,827.63/14,919.93 = 8,309.61/x
3. Step 3: Cross multiply
   10,827.63x = 14,919.93 × 8,309.61
4. Step 4: Simplify right side
   10,827.63x = 123,978,799.53
5. Step 5: Solve for x
   x = 123,978,799.53/10,827.63
6. Step 6: Final answer
   x = 11,450.22