Finding the Fourth Proportional to 33,075.30, 49,619.78 and 10,890

Step by Step Solution

1. Step 1: Write the proportion equation
   33,075.30 : 49,619.78 = 10,890 : x
2. Step 2: Convert to fraction form
   33,075.30/49,619.78 = 10,890/x
3. Step 3: Cross multiply
   33,075.30x = 49,619.78 × 10,890
4. Step 4: Simplify right side
   33,075.30x = 540,359,404.20
5. Step 5: Solve for x
   x = 540,359,404.20/33,075.30
6. Step 6: Final answer
   x = 16,337.25