Finding the Fourth Proportional to 13,908.34, 19,194.06 and 7,940.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,908.34 : 19,194.06 = 7,940.06 : x
2. Step 2: Convert to fraction form
   13,908.34/19,194.06 = 7,940.06/x
3. Step 3: Cross multiply
   13,908.34x = 19,194.06 × 7,940.06
4. Step 4: Simplify right side
   13,908.34x = 152,401,988.04
5. Step 5: Solve for x
   x = 152,401,988.04/13,908.34
6. Step 6: Final answer
   x = 10,957.60