Finding the Fourth Proportional to 9,378,698.91, 12,942,604.49 and 5,086,346.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,378,698.91 : 12,942,604.49 = 5,086,346.91 : x
2. Step 2: Convert to fraction form
   9,378,698.91/12,942,604.49 = 5,086,346.91/x
3. Step 3: Cross multiply
   9,378,698.91x = 12,942,604.49 × 5,086,346.91
4. Step 4: Simplify right side
   9,378,698.91x = 65,830,576,309,707.82
5. Step 5: Solve for x
   x = 65,830,576,309,707.82/9,378,698.91
6. Step 6: Final answer
   x = 7,019,158.73