Finding the Fourth Proportional to 9,155.36, 12,632.28 and 6,176.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,155.36 : 12,632.28 = 6,176.72 : x
2. Step 2: Convert to fraction form
   9,155.36/12,632.28 = 6,176.72/x
3. Step 3: Cross multiply
   9,155.36x = 12,632.28 × 6,176.72
4. Step 4: Simplify right side
   9,155.36x = 78,026,056.52
5. Step 5: Solve for x
   x = 78,026,056.52/9,155.36
6. Step 6: Final answer
   x = 8,522.45