Finding the Fourth Proportional to 11,434.96, 17,148.18 and 3,936.40

Step by Step Solution

1. Step 1: Write the proportion equation
   11,434.96 : 17,148.18 = 3,936.40 : x
2. Step 2: Convert to fraction form
   11,434.96/17,148.18 = 3,936.40/x
3. Step 3: Cross multiply
   11,434.96x = 17,148.18 × 3,936.40
4. Step 4: Simplify right side
   11,434.96x = 67,502,095.75
5. Step 5: Solve for x
   x = 67,502,095.75/11,434.96
6. Step 6: Final answer
   x = 5,903.13