Finding the Fourth Proportional to 9,685.78, 14,527.26 and 3,111.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,685.78 : 14,527.26 = 3,111.12 : x
2. Step 2: Convert to fraction form
   9,685.78/14,527.26 = 3,111.12/x
3. Step 3: Cross multiply
   9,685.78x = 14,527.26 × 3,111.12
4. Step 4: Simplify right side
   9,685.78x = 45,196,049.13
5. Step 5: Solve for x
   x = 45,196,049.13/9,685.78
6. Step 6: Final answer
   x = 4,666.23