Finding the Fourth Proportional to 12,688.46, 17,498.51 and 10,895.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,688.46 : 17,498.51 = 10,895.38 : x
2. Step 2: Convert to fraction form
   12,688.46/17,498.51 = 10,895.38/x
3. Step 3: Cross multiply
   12,688.46x = 17,498.51 × 10,895.38
4. Step 4: Simplify right side
   12,688.46x = 190,652,773.91
5. Step 5: Solve for x
   x = 190,652,773.91/12,688.46
6. Step 6: Final answer
   x = 15,025.68