Finding the Fourth Proportional to 12,399,105.15, 18,598,717.16 and 3,763,280.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,399,105.15 : 18,598,717.16 = 3,763,280.63 : x
2. Step 2: Convert to fraction form
   12,399,105.15/18,598,717.16 = 3,763,280.63/x
3. Step 3: Cross multiply
   12,399,105.15x = 18,598,717.16 × 3,763,280.63
4. Step 4: Simplify right side
   12,399,105.15x = 69,992,192,072,869.30
5. Step 5: Solve for x
   x = 69,992,192,072,869.30/12,399,105.15
6. Step 6: Final answer
   x = 5,644,938.99