Finding the Fourth Proportional to 11,443.28, 17,155.16 and 10,898.96

Step by Step Solution

1. Step 1: Write the proportion equation
   11,443.28 : 17,155.16 = 10,898.96 : x
2. Step 2: Convert to fraction form
   11,443.28/17,155.16 = 10,898.96/x
3. Step 3: Cross multiply
   11,443.28x = 17,155.16 × 10,898.96
4. Step 4: Simplify right side
   11,443.28x = 186,973,402.63
5. Step 5: Solve for x
   x = 186,973,402.63/11,443.28
6. Step 6: Final answer
   x = 16,339.14