Finding the Fourth Proportional to 10,856.40, 14,984.04 and 10,117.68

Step by Step Solution

1. Step 1: Write the proportion equation
   10,856.40 : 14,984.04 = 10,117.68 : x
2. Step 2: Convert to fraction form
   10,856.40/14,984.04 = 10,117.68/x
3. Step 3: Cross multiply
   10,856.40x = 14,984.04 × 10,117.68
4. Step 4: Simplify right side
   10,856.40x = 151,603,721.83
5. Step 5: Solve for x
   x = 151,603,721.83/10,856.40
6. Step 6: Final answer
   x = 13,964.46