Finding the Fourth Proportional to 10,951.47, 16,428.69 and 3,553.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,951.47 : 16,428.69 = 3,553.54 : x
2. Step 2: Convert to fraction form
   10,951.47/16,428.69 = 3,553.54/x
3. Step 3: Cross multiply
   10,951.47x = 16,428.69 × 3,553.54
4. Step 4: Simplify right side
   10,951.47x = 58,379,965.99
5. Step 5: Solve for x
   x = 58,379,965.99/10,951.47
6. Step 6: Final answer
   x = 5,330.79