Finding the Fourth Proportional to 8,776,353.36, 13,155,892.38 and 5,128,453.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,776,353.36 : 13,155,892.38 = 5,128,453.56 : x
2. Step 2: Convert to fraction form
   8,776,353.36/13,155,892.38 = 5,128,453.56/x
3. Step 3: Cross multiply
   8,776,353.36x = 13,155,892.38 × 5,128,453.56
4. Step 4: Simplify right side
   8,776,353.36x = 67,469,383,111,187.88
5. Step 5: Solve for x
   x = 67,469,383,111,187.88/8,776,353.36
6. Step 6: Final answer
   x = 7,687,632.93