Finding the Fourth Proportional to 12,067,515.30, 18,096,461.55 and 3,978,239.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,067,515.30 : 18,096,461.55 = 3,978,239.70 : x
2. Step 2: Convert to fraction form
   12,067,515.30/18,096,461.55 = 3,978,239.70/x
3. Step 3: Cross multiply
   12,067,515.30x = 18,096,461.55 × 3,978,239.70
4. Step 4: Simplify right side
   12,067,515.30x = 71,992,061,767,733.55
5. Step 5: Solve for x
   x = 71,992,061,767,733.55/12,067,515.30
6. Step 6: Final answer
   x = 5,965,773.40