Finding the Fourth Proportional to 11,646.38, 17,470.89 and 3,855.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,646.38 : 17,470.89 = 3,855.20 : x
2. Step 2: Convert to fraction form
   11,646.38/17,470.89 = 3,855.20/x
3. Step 3: Cross multiply
   11,646.38x = 17,470.89 × 3,855.20
4. Step 4: Simplify right side
   11,646.38x = 67,353,687.77
5. Step 5: Solve for x
   x = 67,353,687.77/11,646.38
6. Step 6: Final answer
   x = 5,783.23