Finding the Fourth Proportional to 12,424,382.78, 17,145,484.29 and 7,198,103.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,424,382.78 : 17,145,484.29 = 7,198,103.42 : x
2. Step 2: Convert to fraction form
   12,424,382.78/17,145,484.29 = 7,198,103.42/x
3. Step 3: Cross multiply
   12,424,382.78x = 17,145,484.29 × 7,198,103.42
4. Step 4: Simplify right side
   12,424,382.78x = 123,414,969,105,405.27
5. Step 5: Solve for x
   x = 123,414,969,105,405.27/12,424,382.78
6. Step 6: Final answer
   x = 9,933,287.74