Finding the Fourth Proportional to 13,951.95, 20,877.78 and 10,245

Step by Step Solution

1. Step 1: Write the proportion equation
   13,951.95 : 20,877.78 = 10,245 : x
2. Step 2: Convert to fraction form
   13,951.95/20,877.78 = 10,245/x
3. Step 3: Cross multiply
   13,951.95x = 20,877.78 × 10,245
4. Step 4: Simplify right side
   13,951.95x = 213,892,856.10
5. Step 5: Solve for x
   x = 213,892,856.10/13,951.95
6. Step 6: Final answer
   x = 15,330.68