Finding the Fourth Proportional to 13,919.58, 19,205.91 and 7,949.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,919.58 : 19,205.91 = 7,949.34 : x
2. Step 2: Convert to fraction form
   13,919.58/19,205.91 = 7,949.34/x
3. Step 3: Cross multiply
   13,919.58x = 19,205.91 × 7,949.34
4. Step 4: Simplify right side
   13,919.58x = 152,674,308.60
5. Step 5: Solve for x
   x = 152,674,308.60/13,919.58
6. Step 6: Final answer
   x = 10,968.31