Finding the Fourth Proportional to 12,271.78, 18,410.61 and 3,952.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,271.78 : 18,410.61 = 3,952.57 : x
2. Step 2: Convert to fraction form
   12,271.78/18,410.61 = 3,952.57/x
3. Step 3: Cross multiply
   12,271.78x = 18,410.61 × 3,952.57
4. Step 4: Simplify right side
   12,271.78x = 72,769,224.77
5. Step 5: Solve for x
   x = 72,769,224.77/12,271.78
6. Step 6: Final answer
   x = 5,929.80