Finding the Fourth Proportional to 18,499,542.82, 25,528,564.56 and 10,239,112.60

Step by Step Solution

1. Step 1: Write the proportion equation
   18,499,542.82 : 25,528,564.56 = 10,239,112.60 : x
2. Step 2: Convert to fraction form
   18,499,542.82/25,528,564.56 = 10,239,112.60/x
3. Step 3: Cross multiply
   18,499,542.82x = 25,528,564.56 × 10,239,112.60
4. Step 4: Simplify right side
   18,499,542.82x = 261,389,847,020,784.72
5. Step 5: Solve for x
   x = 261,389,847,020,784.72/18,499,542.82
6. Step 6: Final answer
   x = 14,129,530.10