Finding the Fourth Proportional to 21,492.29, 29,659.38 and 12,060.86

Step by Step Solution

1. Step 1: Write the proportion equation
   21,492.29 : 29,659.38 = 12,060.86 : x
2. Step 2: Convert to fraction form
   21,492.29/29,659.38 = 12,060.86/x
3. Step 3: Cross multiply
   21,492.29x = 29,659.38 × 12,060.86
4. Step 4: Simplify right side
   21,492.29x = 357,717,481.57
5. Step 5: Solve for x
   x = 357,717,481.57/21,492.29
6. Step 6: Final answer
   x = 16,643.99