Finding the Fourth Proportional to 12,411.63, 18,615.24 and 3,527.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,411.63 : 18,615.24 = 3,527.55 : x
2. Step 2: Convert to fraction form
   12,411.63/18,615.24 = 3,527.55/x
3. Step 3: Cross multiply
   12,411.63x = 18,615.24 × 3,527.55
4. Step 4: Simplify right side
   12,411.63x = 65,666,189.86
5. Step 5: Solve for x
   x = 65,666,189.86/12,411.63
6. Step 6: Final answer
   x = 5,290.70