Finding the Fourth Proportional to 21,978.10, 32,943.88 and 7,183.05

Step by Step Solution

1. Step 1: Write the proportion equation
   21,978.10 : 32,943.88 = 7,183.05 : x
2. Step 2: Convert to fraction form
   21,978.10/32,943.88 = 7,183.05/x
3. Step 3: Cross multiply
   21,978.10x = 32,943.88 × 7,183.05
4. Step 4: Simplify right side
   21,978.10x = 236,637,537.23
5. Step 5: Solve for x
   x = 236,637,537.23/21,978.10
6. Step 6: Final answer
   x = 10,766.97