Finding the Fourth Proportional to 20,408,069.12, 30,615,870.72 and 8,441,738.24

Step by Step Solution

1. Step 1: Write the proportion equation
   20,408,069.12 : 30,615,870.72 = 8,441,738.24 : x
2. Step 2: Convert to fraction form
   20,408,069.12/30,615,870.72 = 8,441,738.24/x
3. Step 3: Cross multiply
   20,408,069.12x = 30,615,870.72 × 8,441,738.24
4. Step 4: Simplify right side
   20,408,069.12x = 258,451,166,607,920.34
5. Step 5: Solve for x
   x = 258,451,166,607,920.34/20,408,069.12
6. Step 6: Final answer
   x = 12,664,165.59