Finding the Fourth Proportional to 13,906.94, 19,191.48 and 7,619.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,906.94 : 19,191.48 = 7,619.18 : x
2. Step 2: Convert to fraction form
   13,906.94/19,191.48 = 7,619.18/x
3. Step 3: Cross multiply
   13,906.94x = 19,191.48 × 7,619.18
4. Step 4: Simplify right side
   13,906.94x = 146,223,340.59
5. Step 5: Solve for x
   x = 146,223,340.59/13,906.94
6. Step 6: Final answer
   x = 10,514.42