Finding the Fourth Proportional to 12,020.05, 16,587.71 and 6,642.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,020.05 : 16,587.71 = 6,642.37 : x
2. Step 2: Convert to fraction form
   12,020.05/16,587.71 = 6,642.37/x
3. Step 3: Cross multiply
   12,020.05x = 16,587.71 × 6,642.37
4. Step 4: Simplify right side
   12,020.05x = 110,181,707.27
5. Step 5: Solve for x
   x = 110,181,707.27/12,020.05
6. Step 6: Final answer
   x = 9,166.49