Finding the Fourth Proportional to 8,956.37, 12,359.89 and 4,977.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,956.37 : 12,359.89 = 4,977.55 : x
2. Step 2: Convert to fraction form
   8,956.37/12,359.89 = 4,977.55/x
3. Step 3: Cross multiply
   8,956.37x = 12,359.89 × 4,977.55
4. Step 4: Simplify right side
   8,956.37x = 61,521,992.14
5. Step 5: Solve for x
   x = 61,521,992.14/8,956.37
6. Step 6: Final answer
   x = 6,869.07