Finding the Fourth Proportional to 8,978.37, 13,473.72 and 3,134.97

Step by Step Solution

1. Step 1: Write the proportion equation
   8,978.37 : 13,473.72 = 3,134.97 : x
2. Step 2: Convert to fraction form
   8,978.37/13,473.72 = 3,134.97/x
3. Step 3: Cross multiply
   8,978.37x = 13,473.72 × 3,134.97
4. Step 4: Simplify right side
   8,978.37x = 42,239,707.99
5. Step 5: Solve for x
   x = 42,239,707.99/8,978.37
6. Step 6: Final answer
   x = 4,704.61