Finding the Fourth Proportional to 12,949,940.56, 19,420,350.72 and 4,311,695.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,949,940.56 : 19,420,350.72 = 4,311,695.68 : x
2. Step 2: Convert to fraction form
   12,949,940.56/19,420,350.72 = 4,311,695.68/x
3. Step 3: Cross multiply
   12,949,940.56x = 19,420,350.72 × 4,311,695.68
4. Step 4: Simplify right side
   12,949,940.56x = 83,734,642,303,508.88
5. Step 5: Solve for x
   x = 83,734,642,303,508.88/12,949,940.56
6. Step 6: Final answer
   x = 6,466,025.22