Finding the Fourth Proportional to 21,079.50, 29,094.56 and 12,132.17

Step by Step Solution

1. Step 1: Write the proportion equation
   21,079.50 : 29,094.56 = 12,132.17 : x
2. Step 2: Convert to fraction form
   21,079.50/29,094.56 = 12,132.17/x
3. Step 3: Cross multiply
   21,079.50x = 29,094.56 × 12,132.17
4. Step 4: Simplify right side
   21,079.50x = 352,980,148.00
5. Step 5: Solve for x
   x = 352,980,148.00/21,079.50
6. Step 6: Final answer
   x = 16,745.19