Finding the Fourth Proportional to 13,906.17, 19,190.12 and 7,618.41

Step by Step Solution

1. Step 1: Write the proportion equation
   13,906.17 : 19,190.12 = 7,618.41 : x
2. Step 2: Convert to fraction form
   13,906.17/19,190.12 = 7,618.41/x
3. Step 3: Cross multiply
   13,906.17x = 19,190.12 × 7,618.41
4. Step 4: Simplify right side
   13,906.17x = 146,198,164.02
5. Step 5: Solve for x
   x = 146,198,164.02/13,906.17
6. Step 6: Final answer
   x = 10,513.19