Finding the Fourth Proportional to 8,870,414.10, 13,305,621.15 and 2,138,828.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,870,414.10 : 13,305,621.15 = 2,138,828.10 : x
2. Step 2: Convert to fraction form
   8,870,414.10/13,305,621.15 = 2,138,828.10/x
3. Step 3: Cross multiply
   8,870,414.10x = 13,305,621.15 × 2,138,828.10
4. Step 4: Simplify right side
   8,870,414.10x = 28,458,436,403,574.32
5. Step 5: Solve for x
   x = 28,458,436,403,574.32/8,870,414.10
6. Step 6: Final answer
   x = 3,208,242.15