Finding the Fourth Proportional to 8,731.74, 12,049.59 and 5,005.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,731.74 : 12,049.59 = 5,005.50 : x
2. Step 2: Convert to fraction form
   8,731.74/12,049.59 = 5,005.50/x
3. Step 3: Cross multiply
   8,731.74x = 12,049.59 × 5,005.50
4. Step 4: Simplify right side
   8,731.74x = 60,314,222.75
5. Step 5: Solve for x
   x = 60,314,222.75/8,731.74
6. Step 6: Final answer
   x = 6,907.47