Finding the Fourth Proportional to 19,942.27, 29,913.30 and 5,149.93

Step by Step Solution

1. Step 1: Write the proportion equation
   19,942.27 : 29,913.30 = 5,149.93 : x
2. Step 2: Convert to fraction form
   19,942.27/29,913.30 = 5,149.93/x
3. Step 3: Cross multiply
   19,942.27x = 29,913.30 × 5,149.93
4. Step 4: Simplify right side
   19,942.27x = 154,051,401.07
5. Step 5: Solve for x
   x = 154,051,401.07/19,942.27
6. Step 6: Final answer
   x = 7,724.87