Finding the Fourth Proportional to 9,405.21, 14,105.50 and 3,860.13

Step by Step Solution

1. Step 1: Write the proportion equation
   9,405.21 : 14,105.50 = 3,860.13 : x
2. Step 2: Convert to fraction form
   9,405.21/14,105.50 = 3,860.13/x
3. Step 3: Cross multiply
   9,405.21x = 14,105.50 × 3,860.13
4. Step 4: Simplify right side
   9,405.21x = 54,449,063.72
5. Step 5: Solve for x
   x = 54,449,063.72/9,405.21
6. Step 6: Final answer
   x = 5,789.24