Finding the Fourth Proportional to 22,072.31, 30,456.50 and 13,116.59

Step by Step Solution

1. Step 1: Write the proportion equation
   22,072.31 : 30,456.50 = 13,116.59 : x
2. Step 2: Convert to fraction form
   22,072.31/30,456.50 = 13,116.59/x
3. Step 3: Cross multiply
   22,072.31x = 30,456.50 × 13,116.59
4. Step 4: Simplify right side
   22,072.31x = 399,485,303.84
5. Step 5: Solve for x
   x = 399,485,303.84/22,072.31
6. Step 6: Final answer
   x = 18,098.94