Finding the Fourth Proportional to 21,498.55, 29,671.52 and 12,546.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,498.55 : 29,671.52 = 12,546.02 : x
2. Step 2: Convert to fraction form
   21,498.55/29,671.52 = 12,546.02/x
3. Step 3: Cross multiply
   21,498.55x = 29,671.52 × 12,546.02
4. Step 4: Simplify right side
   21,498.55x = 372,259,494.80
5. Step 5: Solve for x
   x = 372,259,494.80/21,498.55
6. Step 6: Final answer
   x = 17,315.56