Finding the Fourth Proportional to 8,164.60, 11,256.72 and 5,288.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,164.60 : 11,256.72 = 5,288.25 : x
2. Step 2: Convert to fraction form
   8,164.60/11,256.72 = 5,288.25/x
3. Step 3: Cross multiply
   8,164.60x = 11,256.72 × 5,288.25
4. Step 4: Simplify right side
   8,164.60x = 59,528,338.35
5. Step 5: Solve for x
   x = 59,528,338.35/8,164.60
6. Step 6: Final answer
   x = 7,291.03