Finding the Fourth Proportional to 6,642.72, 9,972.72 and 4,344.48

Step by Step Solution

1. Step 1: Write the proportion equation
   6,642.72 : 9,972.72 = 4,344.48 : x
2. Step 2: Convert to fraction form
   6,642.72/9,972.72 = 4,344.48/x
3. Step 3: Cross multiply
   6,642.72x = 9,972.72 × 4,344.48
4. Step 4: Simplify right side
   6,642.72x = 43,326,282.59
5. Step 5: Solve for x
   x = 43,326,282.59/6,642.72
6. Step 6: Final answer
   x = 6,522.37