Finding the Fourth Proportional to 9,411.13, 14,119.78 and 3,867.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,411.13 : 14,119.78 = 3,867.09 : x
2. Step 2: Convert to fraction form
   9,411.13/14,119.78 = 3,867.09/x
3. Step 3: Cross multiply
   9,411.13x = 14,119.78 × 3,867.09
4. Step 4: Simplify right side
   9,411.13x = 54,602,460.04
5. Step 5: Solve for x
   x = 54,602,460.04/9,411.13
6. Step 6: Final answer
   x = 5,801.90