Finding the Fourth Proportional to 10,640.73, 14,685.50 and 6,105.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,640.73 : 14,685.50 = 6,105.06 : x
2. Step 2: Convert to fraction form
   10,640.73/14,685.50 = 6,105.06/x
3. Step 3: Cross multiply
   10,640.73x = 14,685.50 × 6,105.06
4. Step 4: Simplify right side
   10,640.73x = 89,655,858.63
5. Step 5: Solve for x
   x = 89,655,858.63/10,640.73
6. Step 6: Final answer
   x = 8,425.72