Finding the Fourth Proportional to 19,945.42, 29,915.89 and 5,154.41

Step by Step Solution

1. Step 1: Write the proportion equation
   19,945.42 : 29,915.89 = 5,154.41 : x
2. Step 2: Convert to fraction form
   19,945.42/29,915.89 = 5,154.41/x
3. Step 3: Cross multiply
   19,945.42x = 29,915.89 × 5,154.41
4. Step 4: Simplify right side
   19,945.42x = 154,198,762.57
5. Step 5: Solve for x
   x = 154,198,762.57/19,945.42
6. Step 6: Final answer
   x = 7,731.04