Finding the Fourth Proportional to 12,283.78, 18,422.55 and 3,516.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,283.78 : 18,422.55 = 3,516.34 : x
2. Step 2: Convert to fraction form
   12,283.78/18,422.55 = 3,516.34/x
3. Step 3: Cross multiply
   12,283.78x = 18,422.55 × 3,516.34
4. Step 4: Simplify right side
   12,283.78x = 64,779,949.47
5. Step 5: Solve for x
   x = 64,779,949.47/12,283.78
6. Step 6: Final answer
   x = 5,273.62