Finding the Fourth Proportional to 11,846.70, 16,342.56 and 7,862.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,846.70 : 16,342.56 = 7,862.72 : x
2. Step 2: Convert to fraction form
   11,846.70/16,342.56 = 7,862.72/x
3. Step 3: Cross multiply
   11,846.70x = 16,342.56 × 7,862.72
4. Step 4: Simplify right side
   11,846.70x = 128,496,891.65
5. Step 5: Solve for x
   x = 128,496,891.65/11,846.70
6. Step 6: Final answer
   x = 10,846.64