Finding the Fourth Proportional to 12,280.16, 18,423.84 and 3,960.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,280.16 : 18,423.84 = 3,960.01 : x
2. Step 2: Convert to fraction form
   12,280.16/18,423.84 = 3,960.01/x
3. Step 3: Cross multiply
   12,280.16x = 18,423.84 × 3,960.01
4. Step 4: Simplify right side
   12,280.16x = 72,958,590.64
5. Step 5: Solve for x
   x = 72,958,590.64/12,280.16
6. Step 6: Final answer
   x = 5,941.18