Finding the Fourth Proportional to 11,008,443.10, 16,459,520.55 and 8,138,661.70

Step by Step Solution

1. Step 1: Write the proportion equation
   11,008,443.10 : 16,459,520.55 = 8,138,661.70 : x
2. Step 2: Convert to fraction form
   11,008,443.10/16,459,520.55 = 8,138,661.70/x
3. Step 3: Cross multiply
   11,008,443.10x = 16,459,520.55 × 8,138,661.70
4. Step 4: Simplify right side
   11,008,443.10x = 133,958,469,500,647.94
5. Step 5: Solve for x
   x = 133,958,469,500,647.94/11,008,443.10
6. Step 6: Final answer
   x = 12,168,702.54