Finding the Fourth Proportional to 7,928,081.42, 10,942,286.72 and 5,169,980.48

Step by Step Solution

1. Step 1: Write the proportion equation
   7,928,081.42 : 10,942,286.72 = 5,169,980.48 : x
2. Step 2: Convert to fraction form
   7,928,081.42/10,942,286.72 = 5,169,980.48/x
3. Step 3: Cross multiply
   7,928,081.42x = 10,942,286.72 × 5,169,980.48
4. Step 4: Simplify right side
   7,928,081.42x = 56,571,408,668,401.88
5. Step 5: Solve for x
   x = 56,571,408,668,401.88/7,928,081.42
6. Step 6: Final answer
   x = 7,135,573.63