Finding the Fourth Proportional to 21,981.69, 32,969.17 and 7,190.73

Step by Step Solution

1. Step 1: Write the proportion equation
   21,981.69 : 32,969.17 = 7,190.73 : x
2. Step 2: Convert to fraction form
   21,981.69/32,969.17 = 7,190.73/x
3. Step 3: Cross multiply
   21,981.69x = 32,969.17 × 7,190.73
4. Step 4: Simplify right side
   21,981.69x = 237,072,399.79
5. Step 5: Solve for x
   x = 237,072,399.79/21,981.69
6. Step 6: Final answer
   x = 10,784.99