Finding the Fourth Proportional to 21,835.89, 30,133.35 and 12,404.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,835.89 : 30,133.35 = 12,404.25 : x
2. Step 2: Convert to fraction form
   21,835.89/30,133.35 = 12,404.25/x
3. Step 3: Cross multiply
   21,835.89x = 30,133.35 × 12,404.25
4. Step 4: Simplify right side
   21,835.89x = 373,781,606.74
5. Step 5: Solve for x
   x = 373,781,606.74/21,835.89
6. Step 6: Final answer
   x = 17,117.76