Finding the Fourth Proportional to 8,009.10, 12,013.72 and 5,253.22

Step by Step Solution

1. Step 1: Write the proportion equation
   8,009.10 : 12,013.72 = 5,253.22 : x
2. Step 2: Convert to fraction form
   8,009.10/12,013.72 = 5,253.22/x
3. Step 3: Cross multiply
   8,009.10x = 12,013.72 × 5,253.22
4. Step 4: Simplify right side
   8,009.10x = 63,110,714.18
5. Step 5: Solve for x
   x = 63,110,714.18/8,009.10
6. Step 6: Final answer
   x = 7,879.88