Finding the Fourth Proportional to 16,920.71, 23,348.82 and 9,365.99

Step by Step Solution

1. Step 1: Write the proportion equation
   16,920.71 : 23,348.82 = 9,365.99 : x
2. Step 2: Convert to fraction form
   16,920.71/23,348.82 = 9,365.99/x
3. Step 3: Cross multiply
   16,920.71x = 23,348.82 × 9,365.99
4. Step 4: Simplify right side
   16,920.71x = 218,684,814.63
5. Step 5: Solve for x
   x = 218,684,814.63/16,920.71
6. Step 6: Final answer
   x = 12,924.09