Finding the Fourth Proportional to 12,055.47, 16,637.63 and 6,678.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,055.47 : 16,637.63 = 6,678.42 : x
2. Step 2: Convert to fraction form
   12,055.47/16,637.63 = 6,678.42/x
3. Step 3: Cross multiply
   12,055.47x = 16,637.63 × 6,678.42
4. Step 4: Simplify right side
   12,055.47x = 111,113,080.94
5. Step 5: Solve for x
   x = 111,113,080.94/12,055.47
6. Step 6: Final answer
   x = 9,216.82