Finding the Fourth Proportional to 5,081,441.20, 7,012,529.24 and 2,876,128.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,081,441.20 : 7,012,529.24 = 2,876,128.72 : x
2. Step 2: Convert to fraction form
   5,081,441.20/7,012,529.24 = 2,876,128.72/x
3. Step 3: Cross multiply
   5,081,441.20x = 7,012,529.24 × 2,876,128.72
4. Step 4: Simplify right side
   5,081,441.20x = 20,168,936,747,003.77
5. Step 5: Solve for x
   x = 20,168,936,747,003.77/5,081,441.20
6. Step 6: Final answer
   x = 3,969,137.09