Finding the Fourth Proportional to 9,155.09, 12,633.95 and 5,176.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,155.09 : 12,633.95 = 5,176.98 : x
2. Step 2: Convert to fraction form
   9,155.09/12,633.95 = 5,176.98/x
3. Step 3: Cross multiply
   9,155.09x = 12,633.95 × 5,176.98
4. Step 4: Simplify right side
   9,155.09x = 65,405,680.59
5. Step 5: Solve for x
   x = 65,405,680.59/9,155.09
6. Step 6: Final answer
   x = 7,144.19