Finding the Fourth Proportional to 17,559.18, 26,341.20 and 7,168.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,559.18 : 26,341.20 = 7,168.50 : x
2. Step 2: Convert to fraction form
   17,559.18/26,341.20 = 7,168.50/x
3. Step 3: Cross multiply
   17,559.18x = 26,341.20 × 7,168.50
4. Step 4: Simplify right side
   17,559.18x = 188,826,892.20
5. Step 5: Solve for x
   x = 188,826,892.20/17,559.18
6. Step 6: Final answer
   x = 10,753.74