Finding the Fourth Proportional to 9,402.50, 12,976.75 and 5,423.53

Step by Step Solution

1. Step 1: Write the proportion equation
   9,402.50 : 12,976.75 = 5,423.53 : x
2. Step 2: Convert to fraction form
   9,402.50/12,976.75 = 5,423.53/x
3. Step 3: Cross multiply
   9,402.50x = 12,976.75 × 5,423.53
4. Step 4: Simplify right side
   9,402.50x = 70,379,700.93
5. Step 5: Solve for x
   x = 70,379,700.93/9,402.50
6. Step 6: Final answer
   x = 7,485.21