Finding the Fourth Proportional to 9,176.56, 12,662.82 and 5,143.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,176.56 : 12,662.82 = 5,143.30 : x
2. Step 2: Convert to fraction form
   9,176.56/12,662.82 = 5,143.30/x
3. Step 3: Cross multiply
   9,176.56x = 12,662.82 × 5,143.30
4. Step 4: Simplify right side
   9,176.56x = 65,128,682.11
5. Step 5: Solve for x
   x = 65,128,682.11/9,176.56
6. Step 6: Final answer
   x = 7,097.29