Finding the Fourth Proportional to 12,705.58, 19,025.73 and 8,310.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,705.58 : 19,025.73 = 8,310.22 : x
2. Step 2: Convert to fraction form
   12,705.58/19,025.73 = 8,310.22/x
3. Step 3: Cross multiply
   12,705.58x = 19,025.73 × 8,310.22
4. Step 4: Simplify right side
   12,705.58x = 158,108,001.96
5. Step 5: Solve for x
   x = 158,108,001.96/12,705.58
6. Step 6: Final answer
   x = 12,443.98