Finding the Fourth Proportional to 19,814.58, 29,701.89 and 12,424.23

Step by Step Solution

1. Step 1: Write the proportion equation
   19,814.58 : 29,701.89 = 12,424.23 : x
2. Step 2: Convert to fraction form
   19,814.58/29,701.89 = 12,424.23/x
3. Step 3: Cross multiply
   19,814.58x = 29,701.89 × 12,424.23
4. Step 4: Simplify right side
   19,814.58x = 369,023,112.79
5. Step 5: Solve for x
   x = 369,023,112.79/19,814.58
6. Step 6: Final answer
   x = 18,623.82