Finding the Fourth Proportional to 12,960,108.10, 19,440,162.15 and 8,152,207.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,960,108.10 : 19,440,162.15 = 8,152,207.30 : x
2. Step 2: Convert to fraction form
   12,960,108.10/19,440,162.15 = 8,152,207.30/x
3. Step 3: Cross multiply
   12,960,108.10x = 19,440,162.15 × 8,152,207.30
4. Step 4: Simplify right side
   12,960,108.10x = 158,480,231,792,413.69
5. Step 5: Solve for x
   x = 158,480,231,792,413.69/12,960,108.10
6. Step 6: Final answer
   x = 12,228,310.95