Finding the Fourth Proportional to 21,912.94, 32,848.61 and 7,111.51

Step by Step Solution

1. Step 1: Write the proportion equation
   21,912.94 : 32,848.61 = 7,111.51 : x
2. Step 2: Convert to fraction form
   21,912.94/32,848.61 = 7,111.51/x
3. Step 3: Cross multiply
   21,912.94x = 32,848.61 × 7,111.51
4. Step 4: Simplify right side
   21,912.94x = 233,603,018.70
5. Step 5: Solve for x
   x = 233,603,018.70/21,912.94
6. Step 6: Final answer
   x = 10,660.51