Finding the Fourth Proportional to 9,960.61, 14,942.28 and 3,385.03

Step by Step Solution

1. Step 1: Write the proportion equation
   9,960.61 : 14,942.28 = 3,385.03 : x
2. Step 2: Convert to fraction form
   9,960.61/14,942.28 = 3,385.03/x
3. Step 3: Cross multiply
   9,960.61x = 14,942.28 × 3,385.03
4. Step 4: Simplify right side
   9,960.61x = 50,580,066.07
5. Step 5: Solve for x
   x = 50,580,066.07/9,960.61
6. Step 6: Final answer
   x = 5,078.01