Finding the Fourth Proportional to 19,079,016.75, 26,326,653.42 and 12,897,513.20

Step by Step Solution

1. Step 1: Write the proportion equation
   19,079,016.75 : 26,326,653.42 = 12,897,513.20 : x
2. Step 2: Convert to fraction form
   19,079,016.75/26,326,653.42 = 12,897,513.20/x
3. Step 3: Cross multiply
   19,079,016.75x = 26,326,653.42 × 12,897,513.20
4. Step 4: Simplify right side
   19,079,016.75x = 339,548,359,864,641.94
5. Step 5: Solve for x
   x = 339,548,359,864,641.94/19,079,016.75
6. Step 6: Final answer
   x = 17,796,952.76