Finding the Fourth Proportional to 12,968.35, 19,421.34 and 7,404.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,968.35 : 19,421.34 = 7,404.83 : x
2. Step 2: Convert to fraction form
   12,968.35/19,421.34 = 7,404.83/x
3. Step 3: Cross multiply
   12,968.35x = 19,421.34 × 7,404.83
4. Step 4: Simplify right side
   12,968.35x = 143,811,721.07
5. Step 5: Solve for x
   x = 143,811,721.07/12,968.35
6. Step 6: Final answer
   x = 11,089.44