Finding the Fourth Proportional to 12,072.86, 18,109.26 and 3,308.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,072.86 : 18,109.26 = 3,308.46 : x
2. Step 2: Convert to fraction form
   12,072.86/18,109.26 = 3,308.46/x
3. Step 3: Cross multiply
   12,072.86x = 18,109.26 × 3,308.46
4. Step 4: Simplify right side
   12,072.86x = 59,913,762.34
5. Step 5: Solve for x
   x = 59,913,762.34/12,072.86
6. Step 6: Final answer
   x = 4,962.68