Finding the Fourth Proportional to 12,353.64, 18,528.52 and 3,586.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,353.64 : 18,528.52 = 3,586.72 : x
2. Step 2: Convert to fraction form
   12,353.64/18,528.52 = 3,586.72/x
3. Step 3: Cross multiply
   12,353.64x = 18,528.52 × 3,586.72
4. Step 4: Simplify right side
   12,353.64x = 66,456,613.25
5. Step 5: Solve for x
   x = 66,456,613.25/12,353.64
6. Step 6: Final answer
   x = 5,379.52