Finding the Fourth Proportional to 12,427,632, 18,642,112.31 and 3,908,632.77

Step by Step Solution

1. Step 1: Write the proportion equation
   12,427,632 : 18,642,112.31 = 3,908,632.77 : x
2. Step 2: Convert to fraction form
   12,427,632/18,642,112.31 = 3,908,632.77/x
3. Step 3: Cross multiply
   12,427,632x = 18,642,112.31 × 3,908,632.77
4. Step 4: Simplify right side
   12,427,632x = 72,865,171,086,657.98
5. Step 5: Solve for x
   x = 72,865,171,086,657.98/12,427,632
6. Step 6: Final answer
   x = 5,863,158.09