Finding the Fourth Proportional to 12,715.42, 19,076.08 and 3,949.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,715.42 : 19,076.08 = 3,949.86 : x
2. Step 2: Convert to fraction form
   12,715.42/19,076.08 = 3,949.86/x
3. Step 3: Cross multiply
   12,715.42x = 19,076.08 × 3,949.86
4. Step 4: Simplify right side
   12,715.42x = 75,347,845.35
5. Step 5: Solve for x
   x = 75,347,845.35/12,715.42
6. Step 6: Final answer
   x = 5,925.71