Finding the Fourth Proportional to 21,700.89, 29,947.86 and 12,269.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,700.89 : 29,947.86 = 12,269.25 : x
2. Step 2: Convert to fraction form
   21,700.89/29,947.86 = 12,269.25/x
3. Step 3: Cross multiply
   21,700.89x = 29,947.86 × 12,269.25
4. Step 4: Simplify right side
   21,700.89x = 367,437,781.31
5. Step 5: Solve for x
   x = 367,437,781.31/21,700.89
6. Step 6: Final answer
   x = 16,931.92