Finding the Fourth Proportional to 21,982.71, 32,978.12 and 7,192.46

Step by Step Solution

1. Step 1: Write the proportion equation
   21,982.71 : 32,978.12 = 7,192.46 : x
2. Step 2: Convert to fraction form
   21,982.71/32,978.12 = 7,192.46/x
3. Step 3: Cross multiply
   21,982.71x = 32,978.12 × 7,192.46
4. Step 4: Simplify right side
   21,982.71x = 237,193,608.12
5. Step 5: Solve for x
   x = 237,193,608.12/21,982.71
6. Step 6: Final answer
   x = 10,790.01