Finding the Fourth Proportional to 9,353.18, 14,019.17 and 3,111.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,353.18 : 14,019.17 = 3,111.72 : x
2. Step 2: Convert to fraction form
   9,353.18/14,019.17 = 3,111.72/x
3. Step 3: Cross multiply
   9,353.18x = 14,019.17 × 3,111.72
4. Step 4: Simplify right side
   9,353.18x = 43,623,716.11
5. Step 5: Solve for x
   x = 43,623,716.11/9,353.18
6. Step 6: Final answer
   x = 4,664.05