Finding the Fourth Proportional to 21,492.56, 29,661.05 and 12,061.13

Step by Step Solution

1. Step 1: Write the proportion equation
   21,492.56 : 29,661.05 = 12,061.13 : x
2. Step 2: Convert to fraction form
   21,492.56/29,661.05 = 12,061.13/x
3. Step 3: Cross multiply
   21,492.56x = 29,661.05 × 12,061.13
4. Step 4: Simplify right side
   21,492.56x = 357,745,661.83
5. Step 5: Solve for x
   x = 357,745,661.83/21,492.56
6. Step 6: Final answer
   x = 16,645.09