Finding the Fourth Proportional to 21,764.61, 30,037.59 and 12,814.35

Step by Step Solution

1. Step 1: Write the proportion equation
   21,764.61 : 30,037.59 = 12,814.35 : x
2. Step 2: Convert to fraction form
   21,764.61/30,037.59 = 12,814.35/x
3. Step 3: Cross multiply
   21,764.61x = 30,037.59 × 12,814.35
4. Step 4: Simplify right side
   21,764.61x = 384,912,191.42
5. Step 5: Solve for x
   x = 384,912,191.42/21,764.61
6. Step 6: Final answer
   x = 17,685.23