Finding the Fourth Proportional to 21,613.52, 29,825.50 and 12,054.39

Step by Step Solution

1. Step 1: Write the proportion equation
   21,613.52 : 29,825.50 = 12,054.39 : x
2. Step 2: Convert to fraction form
   21,613.52/29,825.50 = 12,054.39/x
3. Step 3: Cross multiply
   21,613.52x = 29,825.50 × 12,054.39
4. Step 4: Simplify right side
   21,613.52x = 359,527,999.55
5. Step 5: Solve for x
   x = 359,527,999.55/21,613.52
6. Step 6: Final answer
   x = 16,634.40