Finding the Fourth Proportional to 21,061.95, 29,067.02 and 12,112.26

Step by Step Solution

1. Step 1: Write the proportion equation
   21,061.95 : 29,067.02 = 12,112.26 : x
2. Step 2: Convert to fraction form
   21,061.95/29,067.02 = 12,112.26/x
3. Step 3: Cross multiply
   21,061.95x = 29,067.02 × 12,112.26
4. Step 4: Simplify right side
   21,061.95x = 352,067,303.67
5. Step 5: Solve for x
   x = 352,067,303.67/21,061.95
6. Step 6: Final answer
   x = 16,715.80