Finding the Fourth Proportional to 12,715.15, 19,072.98 and 3,949.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,715.15 : 19,072.98 = 3,949.84 : x
2. Step 2: Convert to fraction form
   12,715.15/19,072.98 = 3,949.84/x
3. Step 3: Cross multiply
   12,715.15x = 19,072.98 × 3,949.84
4. Step 4: Simplify right side
   12,715.15x = 75,335,219.32
5. Step 5: Solve for x
   x = 75,335,219.32/12,715.15
6. Step 6: Final answer
   x = 5,924.84