Finding the Fourth Proportional to 22,395.50, 30,905.82 and 12,459.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,395.50 : 30,905.82 = 12,459.50 : x
2. Step 2: Convert to fraction form
   22,395.50/30,905.82 = 12,459.50/x
3. Step 3: Cross multiply
   22,395.50x = 30,905.82 × 12,459.50
4. Step 4: Simplify right side
   22,395.50x = 385,071,064.29
5. Step 5: Solve for x
   x = 385,071,064.29/22,395.50
6. Step 6: Final answer
   x = 17,194.13