Finding the Fourth Proportional to 12,012,798.72, 18,020,597.92 and 3,926,380.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,012,798.72 : 18,020,597.92 = 3,926,380.80 : x
2. Step 2: Convert to fraction form
   12,012,798.72/18,020,597.92 = 3,926,380.80/x
3. Step 3: Cross multiply
   12,012,798.72x = 18,020,597.92 × 3,926,380.80
4. Step 4: Simplify right side
   12,012,798.72x = 70,755,729,677,607.94
5. Step 5: Solve for x
   x = 70,755,729,677,607.94/12,012,798.72
6. Step 6: Final answer
   x = 5,890,028.74