Finding the Fourth Proportional to 10,856.67, 14,965.88 and 8,494.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,856.67 : 14,965.88 = 8,494.71 : x
2. Step 2: Convert to fraction form
   10,856.67/14,965.88 = 8,494.71/x
3. Step 3: Cross multiply
   10,856.67x = 14,965.88 × 8,494.71
4. Step 4: Simplify right side
   10,856.67x = 127,130,768.02
5. Step 5: Solve for x
   x = 127,130,768.02/10,856.67
6. Step 6: Final answer
   x = 11,709.92