Finding the Fourth Proportional to 12,365,644.73, 18,548,514.78 and 5,172,132.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,365,644.73 : 18,548,514.78 = 5,172,132.59 : x
2. Step 2: Convert to fraction form
   12,365,644.73/18,548,514.78 = 5,172,132.59/x
3. Step 3: Cross multiply
   12,365,644.73x = 18,548,514.78 × 5,172,132.59
4. Step 4: Simplify right side
   12,365,644.73x = 95,935,377,790,796
5. Step 5: Solve for x
   x = 95,935,377,790,796/12,365,644.73
6. Step 6: Final answer
   x = 7,758,218.83