Finding the Fourth Proportional to 12,022.47, 16,590.72 and 6,717.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,022.47 : 16,590.72 = 6,717.78 : x
2. Step 2: Convert to fraction form
   12,022.47/16,590.72 = 6,717.78/x
3. Step 3: Cross multiply
   12,022.47x = 16,590.72 × 6,717.78
4. Step 4: Simplify right side
   12,022.47x = 111,452,807.00
5. Step 5: Solve for x
   x = 111,452,807.00/12,022.47
6. Step 6: Final answer
   x = 9,270.38