Finding the Fourth Proportional to 10,155.02, 15,222.12 and 3,912.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,155.02 : 15,222.12 = 3,912.57 : x
2. Step 2: Convert to fraction form
   10,155.02/15,222.12 = 3,912.57/x
3. Step 3: Cross multiply
   10,155.02x = 15,222.12 × 3,912.57
4. Step 4: Simplify right side
   10,155.02x = 59,557,610.05
5. Step 5: Solve for x
   x = 59,557,610.05/10,155.02
6. Step 6: Final answer
   x = 5,864.85