Finding the Fourth Proportional to 12,200.73, 16,830.83 and 7,716.93

Step by Step Solution

1. Step 1: Write the proportion equation
   12,200.73 : 16,830.83 = 7,716.93 : x
2. Step 2: Convert to fraction form
   12,200.73/16,830.83 = 7,716.93/x
3. Step 3: Cross multiply
   12,200.73x = 16,830.83 × 7,716.93
4. Step 4: Simplify right side
   12,200.73x = 129,882,298.37
5. Step 5: Solve for x
   x = 129,882,298.37/12,200.73
6. Step 6: Final answer
   x = 10,645.45