Finding the Fourth Proportional to 8,978,639.33, 12,392,540.55 and 5,879,362.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,978,639.33 : 12,392,540.55 = 5,879,362.61 : x
2. Step 2: Convert to fraction form
   8,978,639.33/12,392,540.55 = 5,879,362.61/x
3. Step 3: Cross multiply
   8,978,639.33x = 12,392,540.55 × 5,879,362.61
4. Step 4: Simplify right side
   8,978,639.33x = 72,860,239,490,616.14
5. Step 5: Solve for x
   x = 72,860,239,490,616.14/8,978,639.33
6. Step 6: Final answer
   x = 8,114,842.00