Finding the Fourth Proportional to 21,906.76, 32,851.60 and 7,112.12

Step by Step Solution

1. Step 1: Write the proportion equation
   21,906.76 : 32,851.60 = 7,112.12 : x
2. Step 2: Convert to fraction form
   21,906.76/32,851.60 = 7,112.12/x
3. Step 3: Cross multiply
   21,906.76x = 32,851.60 × 7,112.12
4. Step 4: Simplify right side
   21,906.76x = 233,644,521.39
5. Step 5: Solve for x
   x = 233,644,521.39/21,906.76
6. Step 6: Final answer
   x = 10,665.41