Finding the Fourth Proportional to 12,228,019.28, 18,342,437.16 and 5,496,452.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,228,019.28 : 18,342,437.16 = 5,496,452.72 : x
2. Step 2: Convert to fraction form
   12,228,019.28/18,342,437.16 = 5,496,452.72/x
3. Step 3: Cross multiply
   12,228,019.28x = 18,342,437.16 × 5,496,452.72
4. Step 4: Simplify right side
   12,228,019.28x = 100,818,338,619,511.08
5. Step 5: Solve for x
   x = 100,818,338,619,511.08/12,228,019.28
6. Step 6: Final answer
   x = 8,244,862.58