Finding the Fourth Proportional to 22,419.36, 30,938.72 and 12,347.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,419.36 : 30,938.72 = 12,347.72 : x
2. Step 2: Convert to fraction form
   22,419.36/30,938.72 = 12,347.72/x
3. Step 3: Cross multiply
   22,419.36x = 30,938.72 × 12,347.72
4. Step 4: Simplify right side
   22,419.36x = 382,022,435.29
5. Step 5: Solve for x
   x = 382,022,435.29/22,419.36
6. Step 6: Final answer
   x = 17,039.85