Finding the Fourth Proportional to 21,492.54, 29,659.72 and 12,061.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,492.54 : 29,659.72 = 12,061.10 : x
2. Step 2: Convert to fraction form
   21,492.54/29,659.72 = 12,061.10/x
3. Step 3: Cross multiply
   21,492.54x = 29,659.72 × 12,061.10
4. Step 4: Simplify right side
   21,492.54x = 357,728,848.89
5. Step 5: Solve for x
   x = 357,728,848.89/21,492.54
6. Step 6: Final answer
   x = 16,644.33