Finding the Fourth Proportional to 21,498.14, 29,665.80 and 12,064.88

Step by Step Solution

1. Step 1: Write the proportion equation
   21,498.14 : 29,665.80 = 12,064.88 : x
2. Step 2: Convert to fraction form
   21,498.14/29,665.80 = 12,064.88/x
3. Step 3: Cross multiply
   21,498.14x = 29,665.80 × 12,064.88
4. Step 4: Simplify right side
   21,498.14x = 357,914,168.78
5. Step 5: Solve for x
   x = 357,914,168.78/21,498.14
6. Step 6: Final answer
   x = 16,648.61