Finding the Fourth Proportional to 12,678.68, 17,495.40 and 7,373.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,678.68 : 17,495.40 = 7,373.42 : x
2. Step 2: Convert to fraction form
   12,678.68/17,495.40 = 7,373.42/x
3. Step 3: Cross multiply
   12,678.68x = 17,495.40 × 7,373.42
4. Step 4: Simplify right side
   12,678.68x = 129,000,932.27
5. Step 5: Solve for x
   x = 129,000,932.27/12,678.68
6. Step 6: Final answer
   x = 10,174.63