Finding the Fourth Proportional to 12,185.13, 16,811.94 and 7,651.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,185.13 : 16,811.94 = 7,651.56 : x
2. Step 2: Convert to fraction form
   12,185.13/16,811.94 = 7,651.56/x
3. Step 3: Cross multiply
   12,185.13x = 16,811.94 × 7,651.56
4. Step 4: Simplify right side
   12,185.13x = 128,637,529.37
5. Step 5: Solve for x
   x = 128,637,529.37/12,185.13
6. Step 6: Final answer
   x = 10,556.93