Finding the Fourth Proportional to 9,960.10, 14,940.18 and 3,718.51

Step by Step Solution

1. Step 1: Write the proportion equation
   9,960.10 : 14,940.18 = 3,718.51 : x
2. Step 2: Convert to fraction form
   9,960.10/14,940.18 = 3,718.51/x
3. Step 3: Cross multiply
   9,960.10x = 14,940.18 × 3,718.51
4. Step 4: Simplify right side
   9,960.10x = 55,555,171.38
5. Step 5: Solve for x
   x = 55,555,171.38/9,960.10
6. Step 6: Final answer
   x = 5,577.77