Finding the Fourth Proportional to 17,678.17, 26,524.59 and 7,155.63

Step by Step Solution

1. Step 1: Write the proportion equation
   17,678.17 : 26,524.59 = 7,155.63 : x
2. Step 2: Convert to fraction form
   17,678.17/26,524.59 = 7,155.63/x
3. Step 3: Cross multiply
   17,678.17x = 26,524.59 × 7,155.63
4. Step 4: Simplify right side
   17,678.17x = 189,800,083.78
5. Step 5: Solve for x
   x = 189,800,083.78/17,678.17
6. Step 6: Final answer
   x = 10,736.41