Finding the Fourth Proportional to 21,903.83, 30,227.90 and 12,343.80

Step by Step Solution

1. Step 1: Write the proportion equation
   21,903.83 : 30,227.90 = 12,343.80 : x
2. Step 2: Convert to fraction form
   21,903.83/30,227.90 = 12,343.80/x
3. Step 3: Cross multiply
   21,903.83x = 30,227.90 × 12,343.80
4. Step 4: Simplify right side
   21,903.83x = 373,127,152.02
5. Step 5: Solve for x
   x = 373,127,152.02/21,903.83
6. Step 6: Final answer
   x = 17,034.79