Finding the Fourth Proportional to 11,810.79, 16,282.55 and 8,447.73

Step by Step Solution

1. Step 1: Write the proportion equation
   11,810.79 : 16,282.55 = 8,447.73 : x
2. Step 2: Convert to fraction form
   11,810.79/16,282.55 = 8,447.73/x
3. Step 3: Cross multiply
   11,810.79x = 16,282.55 × 8,447.73
4. Step 4: Simplify right side
   11,810.79x = 137,550,543.87
5. Step 5: Solve for x
   x = 137,550,543.87/11,810.79
6. Step 6: Final answer
   x = 11,646.18