Finding the Fourth Proportional to 11,907.87, 17,826.76 and 7,949.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,907.87 : 17,826.76 = 7,949.31 : x
2. Step 2: Convert to fraction form
   11,907.87/17,826.76 = 7,949.31/x
3. Step 3: Cross multiply
   11,907.87x = 17,826.76 × 7,949.31
4. Step 4: Simplify right side
   11,907.87x = 141,710,362.26
5. Step 5: Solve for x
   x = 141,710,362.26/11,907.87
6. Step 6: Final answer
   x = 11,900.56