Finding the Fourth Proportional to 12,602.98, 18,875.31 and 12,165.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,602.98 : 18,875.31 = 12,165.58 : x
2. Step 2: Convert to fraction form
   12,602.98/18,875.31 = 12,165.58/x
3. Step 3: Cross multiply
   12,602.98x = 18,875.31 × 12,165.58
4. Step 4: Simplify right side
   12,602.98x = 229,629,093.83
5. Step 5: Solve for x
   x = 229,629,093.83/12,602.98
6. Step 6: Final answer
   x = 18,220.22