Finding the Fourth Proportional to 21,068.16, 29,065.01 and 12,113.76

Step by Step Solution

1. Step 1: Write the proportion equation
   21,068.16 : 29,065.01 = 12,113.76 : x
2. Step 2: Convert to fraction form
   21,068.16/29,065.01 = 12,113.76/x
3. Step 3: Cross multiply
   21,068.16x = 29,065.01 × 12,113.76
4. Step 4: Simplify right side
   21,068.16x = 352,086,555.54
5. Step 5: Solve for x
   x = 352,086,555.54/21,068.16
6. Step 6: Final answer
   x = 16,711.78