Finding the Fourth Proportional to 18,398,498.56, 25,389,579.06 and 10,139,324.24

Step by Step Solution

1. Step 1: Write the proportion equation
   18,398,498.56 : 25,389,579.06 = 10,139,324.24 : x
2. Step 2: Convert to fraction form
   18,398,498.56/25,389,579.06 = 10,139,324.24/x
3. Step 3: Cross multiply
   18,398,498.56x = 25,389,579.06 × 10,139,324.24
4. Step 4: Simplify right side
   18,398,498.56x = 257,433,174,469,928.34
5. Step 5: Solve for x
   x = 257,433,174,469,928.34/18,398,498.56
6. Step 6: Final answer
   x = 13,992,075.15