Finding the Fourth Proportional to 9,455.15, 14,186.78 and 3,912.53

Step by Step Solution

1. Step 1: Write the proportion equation
   9,455.15 : 14,186.78 = 3,912.53 : x
2. Step 2: Convert to fraction form
   9,455.15/14,186.78 = 3,912.53/x
3. Step 3: Cross multiply
   9,455.15x = 14,186.78 × 3,912.53
4. Step 4: Simplify right side
   9,455.15x = 55,506,111.86
5. Step 5: Solve for x
   x = 55,506,111.86/9,455.15
6. Step 6: Final answer
   x = 5,870.47