Finding the Fourth Proportional to 12,281.59, 18,422.33 and 3,516.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,281.59 : 18,422.33 = 3,516.50 : x
2. Step 2: Convert to fraction form
   12,281.59/18,422.33 = 3,516.50/x
3. Step 3: Cross multiply
   12,281.59x = 18,422.33 × 3,516.50
4. Step 4: Simplify right side
   12,281.59x = 64,782,105.86
5. Step 5: Solve for x
   x = 64,782,105.86/12,281.59
6. Step 6: Final answer
   x = 5,274.73