Finding the Fourth Proportional to 11,688.55, 17,522.42 and 4,291.29

Step by Step Solution

1. Step 1: Write the proportion equation
   11,688.55 : 17,522.42 = 4,291.29 : x
2. Step 2: Convert to fraction form
   11,688.55/17,522.42 = 4,291.29/x
3. Step 3: Cross multiply
   11,688.55x = 17,522.42 × 4,291.29
4. Step 4: Simplify right side
   11,688.55x = 75,193,764.27
5. Step 5: Solve for x
   x = 75,193,764.27/11,688.55
6. Step 6: Final answer
   x = 6,433.11