Finding the Fourth Proportional to 33,256.72, 49,870.40 and 12,465.64

Step by Step Solution

1. Step 1: Write the proportion equation
   33,256.72 : 49,870.40 = 12,465.64 : x
2. Step 2: Convert to fraction form
   33,256.72/49,870.40 = 12,465.64/x
3. Step 3: Cross multiply
   33,256.72x = 49,870.40 × 12,465.64
4. Step 4: Simplify right side
   33,256.72x = 621,666,453.06
5. Step 5: Solve for x
   x = 621,666,453.06/33,256.72
6. Step 6: Final answer
   x = 18,692.96