Finding the Fourth Proportional to 16,892.38, 23,314.70 and 11,139.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,892.38 : 23,314.70 = 11,139.72 : x
2. Step 2: Convert to fraction form
   16,892.38/23,314.70 = 11,139.72/x
3. Step 3: Cross multiply
   16,892.38x = 23,314.70 × 11,139.72
4. Step 4: Simplify right side
   16,892.38x = 259,719,229.88
5. Step 5: Solve for x
   x = 259,719,229.88/16,892.38
6. Step 6: Final answer
   x = 15,374.93