Finding the Fourth Proportional to 12,936.65, 17,852.02 and 7,909.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,936.65 : 17,852.02 = 7,909.27 : x
2. Step 2: Convert to fraction form
   12,936.65/17,852.02 = 7,909.27/x
3. Step 3: Cross multiply
   12,936.65x = 17,852.02 × 7,909.27
4. Step 4: Simplify right side
   12,936.65x = 141,196,381.82
5. Step 5: Solve for x
   x = 141,196,381.82/12,936.65
6. Step 6: Final answer
   x = 10,914.45