Finding the Fourth Proportional to 13,928.09, 19,219.41 and 7,958.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,928.09 : 19,219.41 = 7,958.52 : x
2. Step 2: Convert to fraction form
   13,928.09/19,219.41 = 7,958.52/x
3. Step 3: Cross multiply
   13,928.09x = 19,219.41 × 7,958.52
4. Step 4: Simplify right side
   13,928.09x = 152,958,058.87
5. Step 5: Solve for x
   x = 152,958,058.87/13,928.09
6. Step 6: Final answer
   x = 10,981.99