Finding the Fourth Proportional to 23,061.09, 31,827.32 and 12,991.48

Step by Step Solution

1. Step 1: Write the proportion equation
   23,061.09 : 31,827.32 = 12,991.48 : x
2. Step 2: Convert to fraction form
   23,061.09/31,827.32 = 12,991.48/x
3. Step 3: Cross multiply
   23,061.09x = 31,827.32 × 12,991.48
4. Step 4: Simplify right side
   23,061.09x = 413,483,991.23
5. Step 5: Solve for x
   x = 413,483,991.23/23,061.09
6. Step 6: Final answer
   x = 17,929.94