Finding the Fourth Proportional to 9,179.36, 12,667.18 and 5,200.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,179.36 : 12,667.18 = 5,200.58 : x
2. Step 2: Convert to fraction form
   9,179.36/12,667.18 = 5,200.58/x
3. Step 3: Cross multiply
   9,179.36x = 12,667.18 × 5,200.58
4. Step 4: Simplify right side
   9,179.36x = 65,876,682.96
5. Step 5: Solve for x
   x = 65,876,682.96/9,179.36
6. Step 6: Final answer
   x = 7,176.61