Finding the Fourth Proportional to 12,942.48, 17,858.17 and 7,907.93

Step by Step Solution

1. Step 1: Write the proportion equation
   12,942.48 : 17,858.17 = 7,907.93 : x
2. Step 2: Convert to fraction form
   12,942.48/17,858.17 = 7,907.93/x
3. Step 3: Cross multiply
   12,942.48x = 17,858.17 × 7,907.93
4. Step 4: Simplify right side
   12,942.48x = 141,221,145.85
5. Step 5: Solve for x
   x = 141,221,145.85/12,942.48
6. Step 6: Final answer
   x = 10,911.44