Finding the Fourth Proportional to 12,265.02, 18,397.86 and 3,945.87

Step by Step Solution

1. Step 1: Write the proportion equation
   12,265.02 : 18,397.86 = 3,945.87 : x
2. Step 2: Convert to fraction form
   12,265.02/18,397.86 = 3,945.87/x
3. Step 3: Cross multiply
   12,265.02x = 18,397.86 × 3,945.87
4. Step 4: Simplify right side
   12,265.02x = 72,595,563.84
5. Step 5: Solve for x
   x = 72,595,563.84/12,265.02
6. Step 6: Final answer
   x = 5,918.91