Finding the Fourth Proportional to 21,141, 29,096.90 and 18,122.94

Step by Step Solution

1. Step 1: Write the proportion equation
   21,141 : 29,096.90 = 18,122.94 : x
2. Step 2: Convert to fraction form
   21,141/29,096.90 = 18,122.94/x
3. Step 3: Cross multiply
   21,141x = 29,096.90 × 18,122.94
4. Step 4: Simplify right side
   21,141x = 527,321,372.89
5. Step 5: Solve for x
   x = 527,321,372.89/21,141
6. Step 6: Final answer
   x = 24,943.07