Finding the Fourth Proportional to 33,715, 50,574.93 and 12,938.50

Step by Step Solution

1. Step 1: Write the proportion equation
   33,715 : 50,574.93 = 12,938.50 : x
2. Step 2: Convert to fraction form
   33,715/50,574.93 = 12,938.50/x
3. Step 3: Cross multiply
   33,715x = 50,574.93 × 12,938.50
4. Step 4: Simplify right side
   33,715x = 654,363,731.81
5. Step 5: Solve for x
   x = 654,363,731.81/33,715
6. Step 6: Final answer
   x = 19,408.68