Finding the Fourth Proportional to 8,747.42, 12,078.98 and 7,500.83

Step by Step Solution

1. Step 1: Write the proportion equation
   8,747.42 : 12,078.98 = 7,500.83 : x
2. Step 2: Convert to fraction form
   8,747.42/12,078.98 = 7,500.83/x
3. Step 3: Cross multiply
   8,747.42x = 12,078.98 × 7,500.83
4. Step 4: Simplify right side
   8,747.42x = 90,602,277.65
5. Step 5: Solve for x
   x = 90,602,277.65/8,747.42
6. Step 6: Final answer
   x = 10,357.61