Finding the Fourth Proportional to 21,086.15, 29,101.01 and 12,134.03

Step by Step Solution

1. Step 1: Write the proportion equation
   21,086.15 : 29,101.01 = 12,134.03 : x
2. Step 2: Convert to fraction form
   21,086.15/29,101.01 = 12,134.03/x
3. Step 3: Cross multiply
   21,086.15x = 29,101.01 × 12,134.03
4. Step 4: Simplify right side
   21,086.15x = 353,112,322.20
5. Step 5: Solve for x
   x = 353,112,322.20/21,086.15
6. Step 6: Final answer
   x = 16,746.18