Finding the Fourth Proportional to 12,293.42, 18,440.10 and 3,528.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,293.42 : 18,440.10 = 3,528.38 : x
2. Step 2: Convert to fraction form
   12,293.42/18,440.10 = 3,528.38/x
3. Step 3: Cross multiply
   12,293.42x = 18,440.10 × 3,528.38
4. Step 4: Simplify right side
   12,293.42x = 65,063,680.04
5. Step 5: Solve for x
   x = 65,063,680.04/12,293.42
6. Step 6: Final answer
   x = 5,292.56