Finding the Fourth Proportional to 13,911.82, 19,200.15 and 7,942.14

Step by Step Solution

1. Step 1: Write the proportion equation
   13,911.82 : 19,200.15 = 7,942.14 : x
2. Step 2: Convert to fraction form
   13,911.82/19,200.15 = 7,942.14/x
3. Step 3: Cross multiply
   13,911.82x = 19,200.15 × 7,942.14
4. Step 4: Simplify right side
   13,911.82x = 152,490,279.32
5. Step 5: Solve for x
   x = 152,490,279.32/13,911.82
6. Step 6: Final answer
   x = 10,961.20