Finding the Fourth Proportional to 21,547.76, 29,735.71 and 12,116.39

Step by Step Solution

1. Step 1: Write the proportion equation
   21,547.76 : 29,735.71 = 12,116.39 : x
2. Step 2: Convert to fraction form
   21,547.76/29,735.71 = 12,116.39/x
3. Step 3: Cross multiply
   21,547.76x = 29,735.71 × 12,116.39
4. Step 4: Simplify right side
   21,547.76x = 360,289,250.03
5. Step 5: Solve for x
   x = 360,289,250.03/21,547.76
6. Step 6: Final answer
   x = 16,720.50