Finding the Fourth Proportional to 12,816,789.72, 17,687,196 and 7,015,942.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,816,789.72 : 17,687,196 = 7,015,942.08 : x
2. Step 2: Convert to fraction form
   12,816,789.72/17,687,196 = 7,015,942.08/x
3. Step 3: Cross multiply
   12,816,789.72x = 17,687,196 × 7,015,942.08
4. Step 4: Simplify right side
   12,816,789.72x = 124,092,342,693,607.69
5. Step 5: Solve for x
   x = 124,092,342,693,607.69/12,816,789.72
6. Step 6: Final answer
   x = 9,682,014.40