Finding the Fourth Proportional to 13,947.50, 19,249.98 and 7,979.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,947.50 : 19,249.98 = 7,979.42 : x
2. Step 2: Convert to fraction form
   13,947.50/19,249.98 = 7,979.42/x
3. Step 3: Cross multiply
   13,947.50x = 19,249.98 × 7,979.42
4. Step 4: Simplify right side
   13,947.50x = 153,603,675.41
5. Step 5: Solve for x
   x = 153,603,675.41/13,947.50
6. Step 6: Final answer
   x = 11,012.99