Finding the Fourth Proportional to 12,673.98, 19,012.05 and 3,910.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,673.98 : 19,012.05 = 3,910.86 : x
2. Step 2: Convert to fraction form
   12,673.98/19,012.05 = 3,910.86/x
3. Step 3: Cross multiply
   12,673.98x = 19,012.05 × 3,910.86
4. Step 4: Simplify right side
   12,673.98x = 74,353,465.86
5. Step 5: Solve for x
   x = 74,353,465.86/12,673.98
6. Step 6: Final answer
   x = 5,866.62