Finding the Fourth Proportional to 8,701.34, 12,009.33 and 5,164.74

Step by Step Solution

1. Step 1: Write the proportion equation
   8,701.34 : 12,009.33 = 5,164.74 : x
2. Step 2: Convert to fraction form
   8,701.34/12,009.33 = 5,164.74/x
3. Step 3: Cross multiply
   8,701.34x = 12,009.33 × 5,164.74
4. Step 4: Simplify right side
   8,701.34x = 62,025,067.02
5. Step 5: Solve for x
   x = 62,025,067.02/8,701.34
6. Step 6: Final answer
   x = 7,128.22