Finding the Fourth Proportional to 13,906.55, 19,192.41 and 7,939.13

Step by Step Solution

1. Step 1: Write the proportion equation
   13,906.55 : 19,192.41 = 7,939.13 : x
2. Step 2: Convert to fraction form
   13,906.55/19,192.41 = 7,939.13/x
3. Step 3: Cross multiply
   13,906.55x = 19,192.41 × 7,939.13
4. Step 4: Simplify right side
   13,906.55x = 152,371,038.00
5. Step 5: Solve for x
   x = 152,371,038.00/13,906.55
6. Step 6: Final answer
   x = 10,956.78