Finding the Fourth Proportional to 21,288.38, 29,374.72 and 12,334.14

Step by Step Solution

1. Step 1: Write the proportion equation
   21,288.38 : 29,374.72 = 12,334.14 : x
2. Step 2: Convert to fraction form
   21,288.38/29,374.72 = 12,334.14/x
3. Step 3: Cross multiply
   21,288.38x = 29,374.72 × 12,334.14
4. Step 4: Simplify right side
   21,288.38x = 362,311,878.11
5. Step 5: Solve for x
   x = 362,311,878.11/21,288.38
6. Step 6: Final answer
   x = 17,019.24