Finding the Fourth Proportional to 12,405,475.18, 18,609,379.59 and 3,651,759.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,405,475.18 : 18,609,379.59 = 3,651,759.49 : x
2. Step 2: Convert to fraction form
   12,405,475.18/18,609,379.59 = 3,651,759.49/x
3. Step 3: Cross multiply
   12,405,475.18x = 18,609,379.59 × 3,651,759.49
4. Step 4: Simplify right side
   12,405,475.18x = 67,956,978,520,794.81
5. Step 5: Solve for x
   x = 67,956,978,520,794.81/12,405,475.18
6. Step 6: Final answer
   x = 5,477,982.71