Finding the Fourth Proportional to 8,968.50, 12,367.17 and 5,430.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,968.50 : 12,367.17 = 5,430.42 : x
2. Step 2: Convert to fraction form
   8,968.50/12,367.17 = 5,430.42/x
3. Step 3: Cross multiply
   8,968.50x = 12,367.17 × 5,430.42
4. Step 4: Simplify right side
   8,968.50x = 67,158,927.31
5. Step 5: Solve for x
   x = 67,158,927.31/8,968.50
6. Step 6: Final answer
   x = 7,488.31