Finding the Fourth Proportional to 5,905,428.78, 8,149,491.72 and 3,189,174.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,905,428.78 : 8,149,491.72 = 3,189,174.78 : x
2. Step 2: Convert to fraction form
   5,905,428.78/8,149,491.72 = 3,189,174.78/x
3. Step 3: Cross multiply
   5,905,428.78x = 8,149,491.72 × 3,189,174.78
4. Step 4: Simplify right side
   5,905,428.78x = 25,990,153,463,242.82
5. Step 5: Solve for x
   x = 25,990,153,463,242.82/5,905,428.78
6. Step 6: Final answer
   x = 4,401,061.20