Finding the Fourth Proportional to 8,389,158.21, 12,522,493.40 and 7,198,730.37

Step by Step Solution

1. Step 1: Write the proportion equation
   8,389,158.21 : 12,522,493.40 = 7,198,730.37 : x
2. Step 2: Convert to fraction form
   8,389,158.21/12,522,493.40 = 7,198,730.37/x
3. Step 3: Cross multiply
   8,389,158.21x = 12,522,493.40 × 7,198,730.37
4. Step 4: Simplify right side
   8,389,158.21x = 90,146,053,510,710.91
5. Step 5: Solve for x
   x = 90,146,053,510,710.91/8,389,158.21
6. Step 6: Final answer
   x = 10,745,542.19