Finding the Fourth Proportional to 8,951.32, 12,351.88 and 5,173.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,951.32 : 12,351.88 = 5,173.89 : x
2. Step 2: Convert to fraction form
   8,951.32/12,351.88 = 5,173.89/x
3. Step 3: Cross multiply
   8,951.32x = 12,351.88 × 5,173.89
4. Step 4: Simplify right side
   8,951.32x = 63,907,199.46
5. Step 5: Solve for x
   x = 63,907,199.46/8,951.32
6. Step 6: Final answer
   x = 7,139.42