Finding the Fourth Proportional to 13,909.48, 19,196.46 and 7,942.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,909.48 : 19,196.46 = 7,942.05 : x
2. Step 2: Convert to fraction form
   13,909.48/19,196.46 = 7,942.05/x
3. Step 3: Cross multiply
   13,909.48x = 19,196.46 × 7,942.05
4. Step 4: Simplify right side
   13,909.48x = 152,459,245.14
5. Step 5: Solve for x
   x = 152,459,245.14/13,909.48
6. Step 6: Final answer
   x = 10,960.82