Finding the Fourth Proportional to 8,088.21, 12,118.86 and 2,820.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,088.21 : 12,118.86 = 2,820.32 : x
2. Step 2: Convert to fraction form
   8,088.21/12,118.86 = 2,820.32/x
3. Step 3: Cross multiply
   8,088.21x = 12,118.86 × 2,820.32
4. Step 4: Simplify right side
   8,088.21x = 34,179,046.10
5. Step 5: Solve for x
   x = 34,179,046.10/8,088.21
6. Step 6: Final answer
   x = 4,225.79