Finding the Fourth Proportional to 11,617.62, 16,045.46 and 7,656.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,617.62 : 16,045.46 = 7,656.31 : x
2. Step 2: Convert to fraction form
   11,617.62/16,045.46 = 7,656.31/x
3. Step 3: Cross multiply
   11,617.62x = 16,045.46 × 7,656.31
4. Step 4: Simplify right side
   11,617.62x = 122,849,015.85
5. Step 5: Solve for x
   x = 122,849,015.85/11,617.62
6. Step 6: Final answer
   x = 10,574.37