Finding the Fourth Proportional to 13,990.58, 19,308.67 and 8,022.23

Step by Step Solution

1. Step 1: Write the proportion equation
   13,990.58 : 19,308.67 = 8,022.23 : x
2. Step 2: Convert to fraction form
   13,990.58/19,308.67 = 8,022.23/x
3. Step 3: Cross multiply
   13,990.58x = 19,308.67 × 8,022.23
4. Step 4: Simplify right side
   13,990.58x = 154,898,591.73
5. Step 5: Solve for x
   x = 154,898,591.73/13,990.58
6. Step 6: Final answer
   x = 11,071.63