Finding the Fourth Proportional to 17,039,665.61, 25,540,565.67 and 12,982,778.18

Step by Step Solution

1. Step 1: Write the proportion equation
   17,039,665.61 : 25,540,565.67 = 12,982,778.18 : x
2. Step 2: Convert to fraction form
   17,039,665.61/25,540,565.67 = 12,982,778.18/x
3. Step 3: Cross multiply
   17,039,665.61x = 25,540,565.67 × 12,982,778.18
4. Step 4: Simplify right side
   17,039,665.61x = 331,587,498,557,630.31
5. Step 5: Solve for x
   x = 331,587,498,557,630.31/17,039,665.61
6. Step 6: Final answer
   x = 19,459,742.12