Finding the Fourth Proportional to 9,686.10, 14,531.56 and 3,112.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,686.10 : 14,531.56 = 3,112.94 : x
2. Step 2: Convert to fraction form
   9,686.10/14,531.56 = 3,112.94/x
3. Step 3: Cross multiply
   9,686.10x = 14,531.56 × 3,112.94
4. Step 4: Simplify right side
   9,686.10x = 45,235,874.39
5. Step 5: Solve for x
   x = 45,235,874.39/9,686.10
6. Step 6: Final answer
   x = 4,670.18