Finding the Fourth Proportional to 12,477.93, 17,218.82 and 6,811.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,477.93 : 17,218.82 = 6,811.56 : x
2. Step 2: Convert to fraction form
   12,477.93/17,218.82 = 6,811.56/x
3. Step 3: Cross multiply
   12,477.93x = 17,218.82 × 6,811.56
4. Step 4: Simplify right side
   12,477.93x = 117,286,991.50
5. Step 5: Solve for x
   x = 117,286,991.50/12,477.93
6. Step 6: Final answer
   x = 9,399.56