Finding the Fourth Proportional to 11,631,912.78, 17,439,789.34 and 5,151,456.75

Step by Step Solution

1. Step 1: Write the proportion equation
   11,631,912.78 : 17,439,789.34 = 5,151,456.75 : x
2. Step 2: Convert to fraction form
   11,631,912.78/17,439,789.34 = 5,151,456.75/x
3. Step 3: Cross multiply
   11,631,912.78x = 17,439,789.34 × 5,151,456.75
4. Step 4: Simplify right side
   11,631,912.78x = 89,840,320,514,121.05
5. Step 5: Solve for x
   x = 89,840,320,514,121.05/11,631,912.78
6. Step 6: Final answer
   x = 7,723,606.79