Finding the Fourth Proportional to 33,756.80, 50,643.88 and 12,974.72

Step by Step Solution

1. Step 1: Write the proportion equation
   33,756.80 : 50,643.88 = 12,974.72 : x
2. Step 2: Convert to fraction form
   33,756.80/50,643.88 = 12,974.72/x
3. Step 3: Cross multiply
   33,756.80x = 50,643.88 × 12,974.72
4. Step 4: Simplify right side
   33,756.80x = 657,090,162.71
5. Step 5: Solve for x
   x = 657,090,162.71/33,756.80
6. Step 6: Final answer
   x = 19,465.42