Finding the Fourth Proportional to 10,447.96, 14,401.79 and 7,919.95

Step by Step Solution

1. Step 1: Write the proportion equation
   10,447.96 : 14,401.79 = 7,919.95 : x
2. Step 2: Convert to fraction form
   10,447.96/14,401.79 = 7,919.95/x
3. Step 3: Cross multiply
   10,447.96x = 14,401.79 × 7,919.95
4. Step 4: Simplify right side
   10,447.96x = 114,061,456.71
5. Step 5: Solve for x
   x = 114,061,456.71/10,447.96
6. Step 6: Final answer
   x = 10,917.10