Finding the Fourth Proportional to 12,711.02, 17,542.73 and 7,404.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,711.02 : 17,542.73 = 7,404.80 : x
2. Step 2: Convert to fraction form
   12,711.02/17,542.73 = 7,404.80/x
3. Step 3: Cross multiply
   12,711.02x = 17,542.73 × 7,404.80
4. Step 4: Simplify right side
   12,711.02x = 129,900,282.37
5. Step 5: Solve for x
   x = 129,900,282.37/12,711.02
6. Step 6: Final answer
   x = 10,219.51