Finding the Fourth Proportional to 8,632.56, 12,947.76 and 7,181.04

Step by Step Solution

1. Step 1: Write the proportion equation
   8,632.56 : 12,947.76 = 7,181.04 : x
2. Step 2: Convert to fraction form
   8,632.56/12,947.76 = 7,181.04/x
3. Step 3: Cross multiply
   8,632.56x = 12,947.76 × 7,181.04
4. Step 4: Simplify right side
   8,632.56x = 92,978,382.47
5. Step 5: Solve for x
   x = 92,978,382.47/8,632.56
6. Step 6: Final answer
   x = 10,770.66