Finding the Fourth Proportional to 13,974.72, 19,284.84 and 7,686.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,974.72 : 19,284.84 = 7,686.96 : x
2. Step 2: Convert to fraction form
   13,974.72/19,284.84 = 7,686.96/x
3. Step 3: Cross multiply
   13,974.72x = 19,284.84 × 7,686.96
4. Step 4: Simplify right side
   13,974.72x = 148,241,793.69
5. Step 5: Solve for x
   x = 148,241,793.69/13,974.72
6. Step 6: Final answer
   x = 10,607.85