Finding the Fourth Proportional to 5,300,155.37, 7,318,760.55 and 5,128,765.67

Step by Step Solution

1. Step 1: Write the proportion equation
   5,300,155.37 : 7,318,760.55 = 5,128,765.67 : x
2. Step 2: Convert to fraction form
   5,300,155.37/7,318,760.55 = 5,128,765.67/x
3. Step 3: Cross multiply
   5,300,155.37x = 7,318,760.55 × 5,128,765.67
4. Step 4: Simplify right side
   5,300,155.37x = 37,536,207,855,790.32
5. Step 5: Solve for x
   x = 37,536,207,855,790.32/5,300,155.37
6. Step 6: Final answer
   x = 7,082,095.76