Finding the Fourth Proportional to 9,356.27, 12,911.06 and 5,164.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,356.27 : 12,911.06 = 5,164.52 : x
2. Step 2: Convert to fraction form
   9,356.27/12,911.06 = 5,164.52/x
3. Step 3: Cross multiply
   9,356.27x = 12,911.06 × 5,164.52
4. Step 4: Simplify right side
   9,356.27x = 66,679,375.95
5. Step 5: Solve for x
   x = 66,679,375.95/9,356.27
6. Step 6: Final answer
   x = 7,126.71