Finding the Fourth Proportional to 9,171.35, 12,656.58 and 5,192.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,171.35 : 12,656.58 = 5,192.38 : x
2. Step 2: Convert to fraction form
   9,171.35/12,656.58 = 5,192.38/x
3. Step 3: Cross multiply
   9,171.35x = 12,656.58 × 5,192.38
4. Step 4: Simplify right side
   9,171.35x = 65,717,748.22
5. Step 5: Solve for x
   x = 65,717,748.22/9,171.35
6. Step 6: Final answer
   x = 7,165.55