Finding the Fourth Proportional to 8,009.32, 12,013.71 and 2,815.06

Step by Step Solution

1. Step 1: Write the proportion equation
   8,009.32 : 12,013.71 = 2,815.06 : x
2. Step 2: Convert to fraction form
   8,009.32/12,013.71 = 2,815.06/x
3. Step 3: Cross multiply
   8,009.32x = 12,013.71 × 2,815.06
4. Step 4: Simplify right side
   8,009.32x = 33,819,314.47
5. Step 5: Solve for x
   x = 33,819,314.47/8,009.32
6. Step 6: Final answer
   x = 4,222.50