Finding the Fourth Proportional to 33,472,627.68, 50,189,433.18 and 12,978,405

Step by Step Solution

1. Step 1: Write the proportion equation
   33,472,627.68 : 50,189,433.18 = 12,978,405 : x
2. Step 2: Convert to fraction form
   33,472,627.68/50,189,433.18 = 12,978,405/x
3. Step 3: Cross multiply
   33,472,627.68x = 50,189,433.18 × 12,978,405
4. Step 4: Simplify right side
   33,472,627.68x = 651,378,790,530,477.88
5. Step 5: Solve for x
   x = 651,378,790,530,477.88/33,472,627.68
6. Step 6: Final answer
   x = 19,460,043.49