Finding the Fourth Proportional to 47,780.48, 71,662.52 and 12,711.94

Step by Step Solution

1. Step 1: Write the proportion equation
   47,780.48 : 71,662.52 = 12,711.94 : x
2. Step 2: Convert to fraction form
   47,780.48/71,662.52 = 12,711.94/x
3. Step 3: Cross multiply
   47,780.48x = 71,662.52 × 12,711.94
4. Step 4: Simplify right side
   47,780.48x = 910,969,507.11
5. Step 5: Solve for x
   x = 910,969,507.11/47,780.48
6. Step 6: Final answer
   x = 19,065.72