Finding the Fourth Proportional to 12,510.55, 18,765.17 and 3,150.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,510.55 : 18,765.17 = 3,150.56 : x
2. Step 2: Convert to fraction form
   12,510.55/18,765.17 = 3,150.56/x
3. Step 3: Cross multiply
   12,510.55x = 18,765.17 × 3,150.56
4. Step 4: Simplify right side
   12,510.55x = 59,120,836.97
5. Step 5: Solve for x
   x = 59,120,836.97/12,510.55
6. Step 6: Final answer
   x = 4,725.68