Finding the Fourth Proportional to 21,642.72, 32,459.76 and 6,849.12

Step by Step Solution

1. Step 1: Write the proportion equation
   21,642.72 : 32,459.76 = 6,849.12 : x
2. Step 2: Convert to fraction form
   21,642.72/32,459.76 = 6,849.12/x
3. Step 3: Cross multiply
   21,642.72x = 32,459.76 × 6,849.12
4. Step 4: Simplify right side
   21,642.72x = 222,320,791.41
5. Step 5: Solve for x
   x = 222,320,791.41/21,642.72
6. Step 6: Final answer
   x = 10,272.31