Finding the Fourth Proportional to 8,496,429.12, 12,741,887.52 and 2,815,128

Step by Step Solution

1. Step 1: Write the proportion equation
   8,496,429.12 : 12,741,887.52 = 2,815,128 : x
2. Step 2: Convert to fraction form
   8,496,429.12/12,741,887.52 = 2,815,128/x
3. Step 3: Cross multiply
   8,496,429.12x = 12,741,887.52 × 2,815,128
4. Step 4: Simplify right side
   8,496,429.12x = 35,870,044,330,402.56
5. Step 5: Solve for x
   x = 35,870,044,330,402.56/8,496,429.12
6. Step 6: Final answer
   x = 4,221,778.80