Finding the Fourth Proportional to 13,926.51, 19,219.60 and 7,958.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,926.51 : 19,219.60 = 7,958.05 : x
2. Step 2: Convert to fraction form
   13,926.51/19,219.60 = 7,958.05/x
3. Step 3: Cross multiply
   13,926.51x = 19,219.60 × 7,958.05
4. Step 4: Simplify right side
   13,926.51x = 152,950,537.78
5. Step 5: Solve for x
   x = 152,950,537.78/13,926.51
6. Step 6: Final answer
   x = 10,982.69