Finding the Fourth Proportional to 21,910.82, 32,871.42 and 7,119.74

Step by Step Solution

1. Step 1: Write the proportion equation
   21,910.82 : 32,871.42 = 7,119.74 : x
2. Step 2: Convert to fraction form
   21,910.82/32,871.42 = 7,119.74/x
3. Step 3: Cross multiply
   21,910.82x = 32,871.42 × 7,119.74
4. Step 4: Simplify right side
   21,910.82x = 234,035,963.83
5. Step 5: Solve for x
   x = 234,035,963.83/21,910.82
6. Step 6: Final answer
   x = 10,681.30