Finding the Fourth Proportional to 12,283.59, 18,425.32 and 3,518.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,283.59 : 18,425.32 = 3,518.50 : x
2. Step 2: Convert to fraction form
   12,283.59/18,425.32 = 3,518.50/x
3. Step 3: Cross multiply
   12,283.59x = 18,425.32 × 3,518.50
4. Step 4: Simplify right side
   12,283.59x = 64,829,488.42
5. Step 5: Solve for x
   x = 64,829,488.42/12,283.59
6. Step 6: Final answer
   x = 5,277.73