Finding the Fourth Proportional to 9,561.40, 14,341.78 and 3,719.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,561.40 : 14,341.78 = 3,719.12 : x
2. Step 2: Convert to fraction form
   9,561.40/14,341.78 = 3,719.12/x
3. Step 3: Cross multiply
   9,561.40x = 14,341.78 × 3,719.12
4. Step 4: Simplify right side
   9,561.40x = 53,338,800.83
5. Step 5: Solve for x
   x = 53,338,800.83/9,561.40
6. Step 6: Final answer
   x = 5,578.56